15672945 has 16 divisors (see below), whose sum is σ = 25260480. Its totient is φ = 8297664.

The previous prime is 15672931. The next prime is 15672961. The reversal of 15672945 is 54927651.

It is not a de Polignac number, because 15672945 - 2⁷ = 15672817 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1674 + ... + 5843.

It is an arithmetic number, because the mean of its divisors is an integer number (1578780).

Almost surely, 2^15672945 is an apocalyptic number.

15672945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15672945 is a deficient number, since it is larger than the sum of its proper divisors (9587535).

15672945 is a wasteful number, since it uses less digits than its factorization.

15672945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7664.

The product of its digits is 75600, while the sum is 39.

The square root of 15672945 is about 3958.9070461429. The cubic root of 15672945 is about 250.2554455680.

The spelling of 15672945 in words is "fifteen million, six hundred seventy-two thousand, nine hundred forty-five".