77136452 has 12 divisors (see below), whose sum is σ = 137202156. Its totient is φ = 37935840.

The previous prime is 77136443. The next prime is 77136487. The reversal of 77136452 is 25463177.

It can be written as a sum of positive squares in 2 ways, for example, as 43217476 + 33918976 = 6574^2 + 5824^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157823 + ... + 158310.

It is an arithmetic number, because the mean of its divisors is an integer number (11433513).

Almost surely, 2^77136452 is an apocalyptic number.

It is an amenable number.

77136452 is a deficient number, since it is larger than the sum of its proper divisors (60065704).

77136452 is a wasteful number, since it uses less digits than its factorization.

77136452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316198 (or 316196 counting only the distinct ones).

The product of its digits is 35280, while the sum is 35.

The square root of 77136452 is about 8782.7360201705. The cubic root of 77136452 is about 425.6832414983.

The spelling of 77136452 in words is "seventy-seven million, one hundred thirty-six thousand, four hundred fifty-two".