77912002 has 16 divisors (see below), whose sum is σ = 134527680. Its totient is φ = 33149808.

The previous prime is 77911997. The next prime is 77912099. The reversal of 77912002 is 20021977.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18073 + ... + 21964.

It is an arithmetic number, because the mean of its divisors is an integer number (8407980).

Almost surely, 2^77912002 is an apocalyptic number.

77912002 is a deficient number, since it is larger than the sum of its proper divisors (56615678).

77912002 is a wasteful number, since it uses less digits than its factorization.

77912002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40185.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 77912002 is about 8826.7775546912. Note that the first 3 decimals coincide. The cubic root of 77912002 is about 427.1051301782.

Adding to 77912002 its reverse (20021977), we get a palindrome (97933979).

The spelling of 77912002 in words is "seventy-seven million, nine hundred twelve thousand, two".