15138764 has 6 divisors (see below), whose sum is σ = 26492844. Its totient is φ = 7569380.

The previous prime is 15138733. The next prime is 15138769. The reversal of 15138764 is 46783151.

It is not an unprimeable number, because it can be changed into a prime (15138769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1892342 + ... + 1892349.

It is an arithmetic number, because the mean of its divisors is an integer number (4415474).

Almost surely, 2^15138764 is an apocalyptic number.

It is an amenable number.

15138764 is a deficient number, since it is larger than the sum of its proper divisors (11354080).

15138764 is a wasteful number, since it uses less digits than its factorization.

15138764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3784695 (or 3784693 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 15138764 is about 3890.8564609864. The cubic root of 15138764 is about 247.3793664405.

The spelling of 15138764 in words is "fifteen million, one hundred thirty-eight thousand, seven hundred sixty-four".