79722478 has 16 divisors (see below), whose sum is σ = 130605696. Its totient is φ = 36195640.

The previous prime is 79722463. The next prime is 79722493. The reversal of 79722478 is 87422797.

It is an interprime number because it is at equal distance from previous prime (79722463) and next prime (79722493).

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, 25425 + ... + 28387.

It is an arithmetic number, because the mean of its divisors is an integer number (8162856).

Almost surely, 2^79722478 is an apocalyptic number.

79722478 is a deficient number, since it is larger than the sum of its proper divisors (50883218).

79722478 is a wasteful number, since it uses less digits than its factorization.

79722478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4199.

The product of its digits is 395136, while the sum is 46.

The square root of 79722478 is about 8928.7444806087. The cubic root of 79722478 is about 430.3881082232.

It can be divided in two parts, 79722 and 478, that added together give a triangular number (80200 = T₄₀₀).

The spelling of 79722478 in words is "seventy-nine million, seven hundred twenty-two thousand, four hundred seventy-eight".