7420764520 has 64 divisors (see below), whose sum is σ = 19038816720. Its totient is φ = 2578796544.

The previous prime is 7420764487. The next prime is 7420764521. The reversal of 7420764520 is 254670247.

It can be written as a sum of positive squares in 8 ways, for example, as 2059888996 + 5360875524 = 45386^2 + 73218^2 .

It is a super-2 number, since 2×7420764520² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7420764520.

It is not an unprimeable number, because it can be changed into a prime (7420764521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410887 + ... + 428566.

Almost surely, 2^7420764520 is an apocalyptic number.

It is an amenable number.

7420764520 is an abundant number, since it is smaller than the sum of its proper divisors (11618052200).

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

7420764520 is a wasteful number, since it uses less digits than its factorization.

7420764520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839494 (or 839490 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 7420764520 is about 86143.8594445361. The cubic root of 7420764520 is about 1950.5161482682.

The spelling of 7420764520 in words is "seven billion, four hundred twenty million, seven hundred sixty-four thousand, five hundred twenty".