Search a number
-
+
388250885 = 51124911307
BaseRepresentation
bin10111001001000…
…011110100000101
31000001120012002102
4113021003310011
51243343012020
6102305321445
712423035531
oct2711036405
91001505072
10388250885
1118a180700
12aa036285
1362589869
14397c6bc1
1524142475
hex17243d05

388250885 has 24 divisors (see below), whose sum is σ = 513541728. Its totient is φ = 281573600.

The previous prime is 388250839. The next prime is 388250893. The reversal of 388250885 is 588052883.

It is a happy number.

388250885 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 388250885 - 210 = 388249861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 296402 + ... + 297708.

It is an arithmetic number, because the mean of its divisors is an integer number (21397572).

Almost surely, 2388250885 is an apocalyptic number.

It is an amenable number.

388250885 is a deficient number, since it is larger than the sum of its proper divisors (125290843).

388250885 is a wasteful number, since it uses less digits than its factorization.

388250885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825 (or 1814 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 47.

The square root of 388250885 is about 19704.0829525253. The cubic root of 388250885 is about 729.5204738412.

The spelling of 388250885 in words is "three hundred eighty-eight million, two hundred fifty thousand, eight hundred eighty-five".

Divisors: 1 5 11 55 121 491 605 1307 2455 5401 6535 14377 27005 59411 71885 158147 297055 641737 790735 3208685 7059107 35295535 77650177 388250885