77869952 has 16 divisors (see below), whose sum is σ = 155131800. Its totient is φ = 38934912.

The previous prime is 77869949. The next prime is 77869969. The reversal of 77869952 is 25996877.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 77869894 and 77869903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304052 + ... + 304307.

Almost surely, 2^77869952 is an apocalyptic number.

It is an amenable number.

77869952 is a deficient number, since it is larger than the sum of its proper divisors (77261848).

77869952 is an equidigital number, since it uses as much as digits as its factorization.

77869952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608373 (or 608361 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 53.

The square root of 77869952 is about 8824.3952767314. The cubic root of 77869952 is about 427.0282785068.

The spelling of 77869952 in words is "seventy-seven million, eight hundred sixty-nine thousand, nine hundred fifty-two".