82391738 has 32 divisors (see below), whose sum is σ = 149893632. Its totient is φ = 33451200.

The previous prime is 82391723. The next prime is 82391753. The reversal of 82391738 is 83719328.

It is an interprime number because it is at equal distance from previous prime (82391723) and next prime (82391753).

It is a junction number, because it is equal to n+sod(n) for n = 82391695 and 82391704.

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, 4220 + ... + 13512.

It is an arithmetic number, because the mean of its divisors is an integer number (4684176).

Almost surely, 2^82391738 is an apocalyptic number.

82391738 is a deficient number, since it is larger than the sum of its proper divisors (67501894).

82391738 is a wasteful number, since it uses less digits than its factorization.

82391738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9350.

The product of its digits is 72576, while the sum is 41.

The square root of 82391738 is about 9076.9894788966. The cubic root of 82391738 is about 435.1388784560.

The spelling of 82391738 in words is "eighty-two million, three hundred ninety-one thousand, seven hundred thirty-eight".