77351428 has 108 divisors (see below), whose sum is σ = 182922880. Its totient is φ = 28005120.

The previous prime is 77351401. The next prime is 77351429. The reversal of 77351428 is 82415377.

It is not an unprimeable number, because it can be changed into a prime (77351429) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 979093 + ... + 979171.

Almost surely, 2^77351428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77351428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91461440).

77351428 is an abundant number, since it is smaller than the sum of its proper divisors (105571452).

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

77351428 is a wasteful number, since it uses less digits than its factorization.

77351428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 116 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 77351428 is about 8794.9660601960. The cubic root of 77351428 is about 426.0783283714.

The spelling of 77351428 in words is "seventy-seven million, three hundred fifty-one thousand, four hundred twenty-eight".