15216494 has 8 divisors (see below), whose sum is σ = 23381568. Its totient is φ = 7422640.

The previous prime is 15216493. The next prime is 15216497. The reversal of 15216494 is 49461251.

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

It is a self number, because there is not a number n which added to its sum of digits gives 15216494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15216493) 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, 92702 + ... + 92865.

It is an arithmetic number, because the mean of its divisors is an integer number (2922696).

Almost surely, 2^15216494 is an apocalyptic number.

15216494 is a deficient number, since it is larger than the sum of its proper divisors (8165074).

15216494 is a wasteful number, since it uses less digits than its factorization.

15216494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185610.

The product of its digits is 8640, while the sum is 32.

The square root of 15216494 is about 3900.8324752545. The cubic root of 15216494 is about 247.8020337426.

The spelling of 15216494 in words is "fifteen million, two hundred sixteen thousand, four hundred ninety-four".