76782990 has 32 divisors (see below), whose sum is σ = 193979520. Its totient is φ = 19397664.

The previous prime is 76782989. The next prime is 76782997. The reversal of 76782990 is 9928767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76782997) 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, 66784 + ... + 67923.

It is an arithmetic number, because the mean of its divisors is an integer number (6061860).

Almost surely, 2^76782990 is an apocalyptic number.

76782990 is an abundant number, since it is smaller than the sum of its proper divisors (117196530).

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

76782990 is a wasteful number, since it uses less digits than its factorization.

76782990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134736.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 76782990 is about 8762.5903704327. The cubic root of 76782990 is about 425.0320437200.

The spelling of 76782990 in words is "seventy-six million, seven hundred eighty-two thousand, nine hundred ninety".