40028152420 has 48 divisors (see below), whose sum is σ = 85507370928. Its totient is φ = 15735836160.

The previous prime is 40028152379. The next prime is 40028152433. The reversal of 40028152420 is 2425182004.

It can be written as a sum of positive squares in 8 ways, for example, as 194379364 + 39833773056 = 13942^2 + 199584^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1545094 + ... + 1570786.

It is an arithmetic number, because the mean of its divisors is an integer number (1781403561).

Almost surely, 2^40028152420 is an apocalyptic number.

It is an amenable number.

40028152420 is an abundant number, since it is smaller than the sum of its proper divisors (45479218508).

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

40028152420 is a wasteful number, since it uses less digits than its factorization.

40028152420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27040 (or 27038 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The spelling of 40028152420 in words is "forty billion, twenty-eight million, one hundred fifty-two thousand, four hundred twenty".