76243220 has 24 divisors (see below), whose sum is σ = 160285608. Its totient is φ = 30464000.

The previous prime is 76243213. The next prime is 76243241. The reversal of 76243220 is 2234267.

It can be written as a sum of positive squares in 4 ways, for example, as 1628176 + 74615044 = 1276^2 + 8638^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 76243220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25820 + ... + 28620.

It is an arithmetic number, because the mean of its divisors is an integer number (6678567).

Almost surely, 2^76243220 is an apocalyptic number.

It is an amenable number.

76243220 is an abundant number, since it is smaller than the sum of its proper divisors (84042388).

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

76243220 is a wasteful number, since it uses less digits than its factorization.

76243220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171 (or 4169 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 76243220 is about 8731.7363679855. The cubic root of 76243220 is about 424.0337355975.

Adding to 76243220 its reverse (2234267), we get a palindrome (78477487).

The spelling of 76243220 in words is "seventy-six million, two hundred forty-three thousand, two hundred twenty".