77702082 has 16 divisors (see below), whose sum is σ = 155545920. Its totient is φ = 25877072.

The previous prime is 77702069. The next prime is 77702083. The reversal of 77702082 is 28020777.

It is a happy number.

It is a super-2 number, since 2×77702082² = 12075227094269448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77702083) 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 7 ways as a sum of consecutive naturals, for example, 2044 + ... + 12632.

It is an arithmetic number, because the mean of its divisors is an integer number (9721620).

Almost surely, 2^77702082 is an apocalyptic number.

77702082 is an abundant number, since it is smaller than the sum of its proper divisors (77843838).

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

77702082 is a wasteful number, since it uses less digits than its factorization.

77702082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11817.

The product of its (nonzero) digits is 10976, while the sum is 33.

The square root of 77702082 is about 8814.8784449929. The cubic root of 77702082 is about 426.7211989490.

The spelling of 77702082 in words is "seventy-seven million, seven hundred two thousand, eighty-two".