816980274 has 48 divisors (see below), whose sum is σ = 1934229024. Its totient is φ = 247161600.

The previous prime is 816980233. The next prime is 816980279. The reversal of 816980274 is 472089618.

It is not an unprimeable number, because it can be changed into a prime (816980279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130189 + ... + 136319.

It is an arithmetic number, because the mean of its divisors is an integer number (40296438).

Almost surely, 2^816980274 is an apocalyptic number.

816980274 is an abundant number, since it is smaller than the sum of its proper divisors (1117248750).

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

816980274 is a wasteful number, since it uses less digits than its factorization.

816980274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6823 (or 6820 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 816980274 is about 28582.8667911391. The cubic root of 816980274 is about 934.8397922005.

The spelling of 816980274 in words is "eight hundred sixteen million, nine hundred eighty thousand, two hundred seventy-four".