76420280 has 64 divisors (see below), whose sum is σ = 182282400. Its totient is φ = 28753920.

The previous prime is 76420243. The next prime is 76420297. The reversal of 76420280 is 8202467.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146420 + ... + 146940.

Almost surely, 2^76420280 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 76420280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91141200).

76420280 is an abundant number, since it is smaller than the sum of its proper divisors (105862120).

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

76420280 is a wasteful number, since it uses less digits than its factorization.

76420280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 76420280 is about 8741.8693653017. The cubic root of 76420280 is about 424.3617270307.

The spelling of 76420280 in words is "seventy-six million, four hundred twenty thousand, two hundred eighty".