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15120664 = 2313145391
BaseRepresentation
bin111001101011…
…100100011000
31001110012122121
4321223210120
512332330124
61300031024
7242344366
oct71534430
931405577
1015120664
118598419
125092474
133195550
142018636
1514da2e4
hexe6b918

15120664 has 16 divisors (see below), whose sum is σ = 30532320. Its totient is φ = 6978720.

The previous prime is 15120661. The next prime is 15120673. The reversal of 15120664 is 46602151.

15120664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15120661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72592 + ... + 72799.

It is an arithmetic number, because the mean of its divisors is an integer number (1908270).

Almost surely, 215120664 is an apocalyptic number.

It is an amenable number.

15120664 is an abundant number, since it is smaller than the sum of its proper divisors (15411656).

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

15120664 is a wasteful number, since it uses less digits than its factorization.

15120664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145410 (or 145406 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 15120664 is about 3888.5297992943. The cubic root of 15120664 is about 247.2807376888.

The spelling of 15120664 in words is "fifteen million, one hundred twenty thousand, six hundred sixty-four".

Divisors: 1 2 4 8 13 26 52 104 145391 290782 581564 1163128 1890083 3780166 7560332 15120664