77412152 has 32 divisors (see below), whose sum is σ = 155869920. Its totient is φ = 35911680.

The previous prime is 77412151. The next prime is 77412163. The reversal of 77412152 is 25121477.

It is a super-2 number, since 2×77412152² = 11985282554542208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77412151) 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, 5648 + ... + 13664.

It is an arithmetic number, because the mean of its divisors is an integer number (4870935).

Almost surely, 2^77412152 is an apocalyptic number.

It is an amenable number.

77412152 is an abundant number, since it is smaller than the sum of its proper divisors (78457768).

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

77412152 is a wasteful number, since it uses less digits than its factorization.

77412152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8111 (or 8107 counting only the distinct ones).

The product of its digits is 3920, while the sum is 29.

The square root of 77412152 is about 8798.4175849979. The cubic root of 77412152 is about 426.1897954489.

The spelling of 77412152 in words is "seventy-seven million, four hundred twelve thousand, one hundred fifty-two".