76138420 has 24 divisors (see below), whose sum is σ = 160076448. Its totient is φ = 30420000.

The previous prime is 76138409. The next prime is 76138429. The reversal of 76138420 is 2483167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76138429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21795 + ... + 25045.

It is an arithmetic number, because the mean of its divisors is an integer number (6669852).

Almost surely, 2^76138420 is an apocalyptic number.

It is an amenable number.

76138420 is an abundant number, since it is smaller than the sum of its proper divisors (83938028).

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

76138420 is a wasteful number, since it uses less digits than its factorization.

76138420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4431 (or 4429 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 76138420 is about 8725.7332070148. The cubic root of 76138420 is about 423.8393615398.

The spelling of 76138420 in words is "seventy-six million, one hundred thirty-eight thousand, four hundred twenty".