15689045 has 8 divisors (see below), whose sum is σ = 19934424. Its totient is φ = 11812864.

The previous prime is 15689039. The next prime is 15689057. The reversal of 15689045 is 54098651.

It can be written as a sum of positive squares in 4 ways, for example, as 1203409 + 14485636 = 1097^2 + 3806^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15689045 - 2⁸ = 15688789 is a prime.

It is a super-2 number, since 2×15689045² = 492292266024050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92204 + ... + 92373.

It is an arithmetic number, because the mean of its divisors is an integer number (2491803).

Almost surely, 2^15689045 is an apocalyptic number.

It is an amenable number.

15689045 is a deficient number, since it is larger than the sum of its proper divisors (4245379).

15689045 is a wasteful number, since it uses less digits than its factorization.

15689045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184599.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 15689045 is about 3960.9399137074. The cubic root of 15689045 is about 250.3411077038.

The spelling of 15689045 in words is "fifteen million, six hundred eighty-nine thousand, forty-five".