82700478 has 48 divisors (see below), whose sum is σ = 216833760. Its totient is φ = 22238208.

The previous prime is 82700437. The next prime is 82700503. The reversal of 82700478 is 87400728.

It is a super-2 number, since 2×82700478² = 13678738122856968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17163 + ... + 21446.

It is an arithmetic number, because the mean of its divisors is an integer number (4517370).

Almost surely, 2^82700478 is an apocalyptic number.

82700478 is an abundant number, since it is smaller than the sum of its proper divisors (134133282).

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

82700478 is a wasteful number, since it uses less digits than its factorization.

82700478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38641 (or 38638 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 82700478 is about 9093.9803166710. The cubic root of 82700478 is about 435.6817213937.

The spelling of 82700478 in words is "eighty-two million, seven hundred thousand, four hundred seventy-eight".