82651404 has 24 divisors (see below), whose sum is σ = 210385728. Its totient is φ = 25045840.

The previous prime is 82651379. The next prime is 82651409. The reversal of 82651404 is 40415628.

It is not an unprimeable number, because it can be changed into a prime (82651409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312942 + ... + 313205.

It is an arithmetic number, because the mean of its divisors is an integer number (8766072).

Almost surely, 2^82651404 is an apocalyptic number.

It is an amenable number.

82651404 is an abundant number, since it is smaller than the sum of its proper divisors (127734324).

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

82651404 is a wasteful number, since it uses less digits than its factorization.

82651404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626165 (or 626163 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 82651404 is about 9091.2817578161. The cubic root of 82651404 is about 435.5955273121.

It can be divided in two parts, 8265 and 1404, that added together give a palindrome (9669).

The spelling of 82651404 in words is "eighty-two million, six hundred fifty-one thousand, four hundred four".