15797494 has 4 divisors (see below), whose sum is σ = 23696244. Its totient is φ = 7898746.

The previous prime is 15797477. The next prime is 15797501. The reversal of 15797494 is 49479751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49479751 = 31 ⋅1596121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3949372 + ... + 3949375.

It is an arithmetic number, because the mean of its divisors is an integer number (5924061).

Almost surely, 2^15797494 is an apocalyptic number.

15797494 is a deficient number, since it is larger than the sum of its proper divisors (7898750).

15797494 is an equidigital number, since it uses as much as digits as its factorization.

15797494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7898749.

The product of its digits is 317520, while the sum is 46.

The square root of 15797494 is about 3974.6061440097. The cubic root of 15797494 is about 250.9166032468.

It can be divided in two parts, 1579749 and 4, that added together give a triangular number (1579753 = T₁₇₇₇).

The spelling of 15797494 in words is "fifteen million, seven hundred ninety-seven thousand, four hundred ninety-four".