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12390572 = 228337321
BaseRepresentation
bin101111010001…
…000010101100
3212022111200002
4233101002230
511132444242
61121323432
7210214055
oct57210254
925274602
1012390572
116aa3247
124196578
13274a9cc
14190772c
15114b432
hexbd10ac

12390572 has 12 divisors (see below), whose sum is σ = 21945336. Its totient is φ = 6120480.

The previous prime is 12390571. The next prime is 12390593. The reversal of 12390572 is 27509321.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12390571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18329 + ... + 18992.

It is an arithmetic number, because the mean of its divisors is an integer number (1828778).

Almost surely, 212390572 is an apocalyptic number.

It is an amenable number.

12390572 is a deficient number, since it is larger than the sum of its proper divisors (9554764).

12390572 is a wasteful number, since it uses less digits than its factorization.

12390572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37408 (or 37406 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 12390572 is about 3520.0244317334. The cubic root of 12390572 is about 231.4002294351.

Adding to 12390572 its reverse (27509321), we get a palindrome (39899893).

It can be divided in two parts, 12 and 390572, that multiplied together give a palindrome (4686864).

The spelling of 12390572 in words is "twelve million, three hundred ninety thousand, five hundred seventy-two".

Divisors: 1 2 4 83 166 332 37321 74642 149284 3097643 6195286 12390572