77152830 has 32 divisors (see below), whose sum is σ = 187082784. Its totient is φ = 20361216.

The previous prime is 77152819. The next prime is 77152837. The reversal of 77152830 is 3825177.

It is a junction number, because it is equal to n+sod(n) for n = 77152791 and 77152800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77152837) 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, 10347 + ... + 16166.

It is an arithmetic number, because the mean of its divisors is an integer number (5846337).

Almost surely, 2^77152830 is an apocalyptic number.

77152830 is an abundant number, since it is smaller than the sum of its proper divisors (109929954).

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

77152830 is a wasteful number, since it uses less digits than its factorization.

77152830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26620.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 77152830 is about 8783.6683680567. The cubic root of 77152830 is about 425.7133671029.

The spelling of 77152830 in words is "seventy-seven million, one hundred fifty-two thousand, eight hundred thirty".