40020120528 has 40 divisors (see below), whose sum is σ = 103460345376. Its totient is φ = 13330358400.

The previous prime is 40020120509. The next prime is 40020120559. The reversal of 40020120528 is 82502102004.

It is a super-2 number, since 2×40020120528² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 40020120498 and 40020120507.

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, 235578 + ... + 368153.

Almost surely, 2^40020120528 is an apocalyptic number.

40020120528 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40020120528 is an abundant number, since it is smaller than the sum of its proper divisors (63440224848).

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

40020120528 is a wasteful number, since it uses less digits than its factorization.

40020120528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605123 (or 605117 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The spelling of 40020120528 in words is "forty billion, twenty million, one hundred twenty thousand, five hundred twenty-eight".