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15012252 = 2232417007
BaseRepresentation
bin111001010001…
…000110011100
31001020200221100
4321101012130
512320343002
61253433100
7241413333
oct71210634
931220840
1015012252
118523a22
12503b790
1331580b8
141dcad1a
1514b811c
hexe5119c

15012252 has 18 divisors (see below), whose sum is σ = 37947728. Its totient is φ = 5004072.

The previous prime is 15012251. The next prime is 15012259. The reversal of 15012252 is 25221051.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×150122522 = 450735420223008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15012251) 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 5 ways as a sum of consecutive naturals, for example, 208468 + ... + 208539.

Almost surely, 215012252 is an apocalyptic number.

15012252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15012252 is an abundant number, since it is smaller than the sum of its proper divisors (22935476).

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

15012252 is a wasteful number, since it uses less digits than its factorization.

15012252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417017 (or 417012 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 15012252 is about 3874.5647497493. The cubic root of 15012252 is about 246.6883358936.

The spelling of 15012252 in words is "fifteen million, twelve thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 9 12 18 36 417007 834014 1251021 1668028 2502042 3753063 5004084 7506126 15012252