15940982 has 4 divisors (see below), whose sum is σ = 23911476. Its totient is φ = 7970490.

The previous prime is 15940973. The next prime is 15940993. The reversal of 15940982 is 28904951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28904951 = 23 ⋅1256737.

It is a super-2 number, since 2×15940982² = 508229814248648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3985244 + ... + 3985247.

It is an arithmetic number, because the mean of its divisors is an integer number (5977869).

Almost surely, 2^15940982 is an apocalyptic number.

15940982 is a deficient number, since it is larger than the sum of its proper divisors (7970494).

15940982 is an equidigital number, since it uses as much as digits as its factorization.

15940982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7970493.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 15940982 is about 3992.6159344470. The cubic root of 15940982 is about 251.6740031680.

The spelling of 15940982 in words is "fifteen million, nine hundred forty thousand, nine hundred eighty-two".