77896420 has 24 divisors (see below), whose sum is σ = 186951744. Its totient is φ = 26707296.

The previous prime is 77896393. The next prime is 77896421. The reversal of 77896420 is 2469877.

It is not an unprimeable number, because it can be changed into a prime (77896421) 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, 278062 + ... + 278341.

It is an arithmetic number, because the mean of its divisors is an integer number (7789656).

Almost surely, 2^77896420 is an apocalyptic number.

77896420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

77896420 is an abundant number, since it is smaller than the sum of its proper divisors (109055324).

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

77896420 is a wasteful number, since it uses less digits than its factorization.

77896420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556419 (or 556417 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 77896420 is about 8825.8948554807. The cubic root of 77896420 is about 427.0766553361.

The spelling of 77896420 in words is "seventy-seven million, eight hundred ninety-six thousand, four hundred twenty".