76440220 has 24 divisors (see below), whose sum is σ = 160693344. Its totient is φ = 30543936.

The previous prime is 76440209. The next prime is 76440227. The reversal of 76440220 is 2204467.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76440227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29622 + ... + 32098.

It is an arithmetic number, because the mean of its divisors is an integer number (6695556).

Almost surely, 2^76440220 is an apocalyptic number.

It is an amenable number.

76440220 is an abundant number, since it is smaller than the sum of its proper divisors (84253124).

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

76440220 is a wasteful number, since it uses less digits than its factorization.

76440220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029 (or 4027 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 76440220 is about 8743.0097792465. The cubic root of 76440220 is about 424.3986327533.

Adding to 76440220 its reverse (2204467), we get a palindrome (78644687).

The spelling of 76440220 in words is "seventy-six million, four hundred forty thousand, two hundred twenty".