82264491 has 48 divisors (see below), whose sum is σ = 132088320. Its totient is φ = 51036480.

The previous prime is 82264487. The next prime is 82264493. The reversal of 82264491 is 19446228.

82264491 is a `hidden beast` number, since 8 + 2 + 2 + 644 + 9 + 1 = 666.

It is not a de Polignac number, because 82264491 - 2² = 82264487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82264493) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 228970 + ... + 229328.

It is an arithmetic number, because the mean of its divisors is an integer number (2751840).

Almost surely, 2^82264491 is an apocalyptic number.

82264491 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

82264491 is a deficient number, since it is larger than the sum of its proper divisors (49823829).

82264491 is a wasteful number, since it uses less digits than its factorization.

82264491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 426 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 82264491 is about 9069.9774531142. The cubic root of 82264491 is about 434.9147514278.

The spelling of 82264491 in words is "eighty-two million, two hundred sixty-four thousand, four hundred ninety-one".