82870474 has 4 divisors (see below), whose sum is σ = 124305714. Its totient is φ = 41435236.

The previous prime is 82870451. The next prime is 82870519. The reversal of 82870474 is 47407828.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 79655625 + 3214849 = 8925^2 + 1793^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20717617 + ... + 20717620.

Almost surely, 2^82870474 is an apocalyptic number.

82870474 is a deficient number, since it is larger than the sum of its proper divisors (41435240).

82870474 is a wasteful number, since it uses less digits than its factorization.

82870474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41435239.

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 82870474 is about 9103.3221408451. The cubic root of 82870474 is about 435.9800407495.

The spelling of 82870474 in words is "eighty-two million, eight hundred seventy thousand, four hundred seventy-four".