40020252320 has 24 divisors (see below), whose sum is σ = 94547846484. Its totient is φ = 16008100864.

The previous prime is 40020252301. The next prime is 40020252341. The reversal of 40020252320 is 2325202004.

It can be written as a sum of positive squares in 2 ways, for example, as 40017601936 + 2650384 = 200044^2 + 1628^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 40020252292 and 40020252301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125063129 + ... + 125063448.

Almost surely, 2^40020252320 is an apocalyptic number.

40020252320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40020252320 is an abundant number, since it is smaller than the sum of its proper divisors (54527594164).

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

40020252320 is a wasteful number, since it uses less digits than its factorization.

40020252320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250126592 (or 250126584 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

Adding to 40020252320 its reverse (2325202004), we get a palindrome (42345454324).

The spelling of 40020252320 in words is "forty billion, twenty million, two hundred fifty-two thousand, three hundred twenty".