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380658285 = 37574973
BaseRepresentation
bin10110101100000…
…110001001101101
3222112021110000000
4112230012021231
51234422031120
6101434454513
712301353630
oct2654061155
9875243000
10380658285
11185965227
12a7594439
1360b2b9b7
14387abc17
1523642990
hex16b0626d

380658285 has 64 divisors (see below), whose sum is σ = 783106560. Its totient is φ = 173980224.

The previous prime is 380658247. The next prime is 380658287. The reversal of 380658285 is 582856083.

It is a happy number.

It is not a de Polignac number, because 380658285 - 26 = 380658221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 380658285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380658287) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74059 + ... + 79031.

It is an arithmetic number, because the mean of its divisors is an integer number (12236040).

Almost surely, 2380658285 is an apocalyptic number.

380658285 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

380658285 is an abundant number, since it is smaller than the sum of its proper divisors (402448275).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

380658285 is an frugal number, since it uses more digits than its factorization.

380658285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006 (or 4988 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 380658285 is about 19510.4660374887. The cubic root of 380658285 is about 724.7336540462.

The spelling of 380658285 in words is "three hundred eighty million, six hundred fifty-eight thousand, two hundred eighty-five".

Divisors: 1 3 5 7 9 15 21 27 35 45 63 81 105 135 189 243 315 405 567 729 945 1215 1701 2187 2835 3645 4973 5103 8505 10935 14919 15309 24865 25515 34811 44757 74595 76545 104433 134271 174055 223785 313299 402813 522165 671355 939897 1208439 1566495 2014065 2819691 3625317 4699485 6042195 8459073 10875951 14098455 18126585 25377219 42295365 54379755 76131657 126886095 380658285