77282274 has 16 divisors (see below), whose sum is σ = 159894720. Its totient is φ = 24872400.

The previous prime is 77282267. The next prime is 77282279. The reversal of 77282274 is 47228277.

It is a happy number.

It is a super-2 number, since 2×77282274² = 11945099749222152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77282279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221902 + ... + 222249.

It is an arithmetic number, because the mean of its divisors is an integer number (9993420).

Almost surely, 2^77282274 is an apocalyptic number.

77282274 is an abundant number, since it is smaller than the sum of its proper divisors (82612446).

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

77282274 is a wasteful number, since it uses less digits than its factorization.

77282274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444185.

The product of its digits is 87808, while the sum is 39.

The square root of 77282274 is about 8791.0337276113. The cubic root of 77282274 is about 425.9513158233.

The spelling of 77282274 in words is "seventy-seven million, two hundred eighty-two thousand, two hundred seventy-four".