82947492 has 18 divisors (see below), whose sum is σ = 209672918. Its totient is φ = 27649152.

The previous prime is 82947463. The next prime is 82947493. The reversal of 82947492 is 29474928.

It can be written as a sum of positive squares in only one way, i.e., 77158656 + 5788836 = 8784^2 + 2406^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (82947493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1152013 + ... + 1152084.

Almost surely, 2^82947492 is an apocalyptic number.

It is an amenable number.

82947492 is an abundant number, since it is smaller than the sum of its proper divisors (126725426).

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

82947492 is a wasteful number, since it uses less digits than its factorization.

82947492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304107 (or 2304102 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 82947492 is about 9107.5513723503. The cubic root of 82947492 is about 436.1150623569.

The spelling of 82947492 in words is "eighty-two million, nine hundred forty-seven thousand, four hundred ninety-two".