76181320 has 16 divisors (see below), whose sum is σ = 171408060. Its totient is φ = 30472512.

The previous prime is 76181309. The next prime is 76181327. The reversal of 76181320 is 2318167.

It can be written as a sum of positive squares in 2 ways, for example, as 75794436 + 386884 = 8706^2 + 622^2 .

It is not an unprimeable number, because it can be changed into a prime (76181327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 952227 + ... + 952306.

Almost surely, 2^76181320 is an apocalyptic number.

It is an amenable number.

76181320 is an abundant number, since it is smaller than the sum of its proper divisors (95226740).

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

76181320 is a wasteful number, since it uses less digits than its factorization.

76181320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904544 (or 1904540 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 76181320 is about 8728.1911069820. The cubic root of 76181320 is about 423.9189503321.

Adding to 76181320 its reverse (2318167), we get a palindrome (78499487).

The spelling of 76181320 in words is "seventy-six million, one hundred eighty-one thousand, three hundred twenty".