82428738 has 16 divisors (see below), whose sum is σ = 188408640. Its totient is φ = 23551056.

The previous prime is 82428719. The next prime is 82428763. The reversal of 82428738 is 83782428.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1962589 = 82428738 / (8 + 2 + 4 + 2 + 8 + 7 + 3 + 8).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 82428738.

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, 981253 + ... + 981336.

It is an arithmetic number, because the mean of its divisors is an integer number (11775540).

Almost surely, 2^82428738 is an apocalyptic number.

82428738 is an abundant number, since it is smaller than the sum of its proper divisors (105979902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82428738 is a wasteful number, since it uses less digits than its factorization.

82428738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962601.

The product of its digits is 172032, while the sum is 42.

The square root of 82428738 is about 9079.0273708146. The cubic root of 82428738 is about 435.2040052492.

The spelling of 82428738 in words is "eighty-two million, four hundred twenty-eight thousand, seven hundred thirty-eight".