76428990 has 48 divisors (see below), whose sum is σ = 216783216. Its totient is φ = 18528000.

The previous prime is 76428983. The next prime is 76429027. The reversal of 76428990 is 9982467.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37611 + ... + 39590.

It is an arithmetic number, because the mean of its divisors is an integer number (4516317).

Almost surely, 2^76428990 is an apocalyptic number.

76428990 is an abundant number, since it is smaller than the sum of its proper divisors (140354226).

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

76428990 is a wasteful number, since it uses less digits than its factorization.

76428990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77225 (or 77222 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 76428990 is about 8742.3675283072. The cubic root of 76428990 is about 424.3778486249.

The spelling of 76428990 in words is "seventy-six million, four hundred twenty-eight thousand, nine hundred ninety".