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390214100 = 22523902141
BaseRepresentation
bin10111010000100…
…011000111010100
31000012020221010002
4113100203013110
51244343322400
6102415350432
712445523303
oct2720430724
91005227102
10390214100
111902a16a1
12aa822418
1362ac6323
1439b7843a
15243cded5
hex174231d4

390214100 has 18 divisors (see below), whose sum is σ = 846764814. Its totient is φ = 156085600.

The previous prime is 390214091. The next prime is 390214109. The reversal of 390214100 is 1412093.

390214100 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (390214091) and next prime (390214109).

It can be written as a sum of positive squares in 3 ways, for example, as 67436944 + 322777156 = 8212^2 + 17966^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390214109) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1950971 + ... + 1951170.

Almost surely, 2390214100 is an apocalyptic number.

It is an amenable number.

390214100 is an abundant number, since it is smaller than the sum of its proper divisors (456550714).

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

390214100 is a wasteful number, since it uses less digits than its factorization.

390214100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3902155 (or 3902148 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 390214100 is about 19753.8376018433. The cubic root of 390214100 is about 730.7480291313.

Adding to 390214100 its reverse (1412093), we get a palindrome (391626193).

The spelling of 390214100 in words is "three hundred ninety million, two hundred fourteen thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 3902141 7804282 15608564 19510705 39021410 78042820 97553525 195107050 390214100