77305452 has 48 divisors (see below), whose sum is σ = 217002240. Its totient is φ = 20924352.

The previous prime is 77305451. The next prime is 77305457. The reversal of 77305452 is 25450377.

It is a super-2 number, since 2×77305452² = 11952265817848608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77305451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22623 + ... + 25814.

It is an arithmetic number, because the mean of its divisors is an integer number (4520880).

Almost surely, 2^77305452 is an apocalyptic number.

It is an amenable number.

77305452 is an abundant number, since it is smaller than the sum of its proper divisors (139696788).

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

77305452 is a wasteful number, since it uses less digits than its factorization.

77305452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48470 (or 48468 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 33.

The square root of 77305452 is about 8792.3519037855. The cubic root of 77305452 is about 425.9938944220.

The spelling of 77305452 in words is "seventy-seven million, three hundred five thousand, four hundred fifty-two".