40021488 has 60 divisors (see below), whose sum is σ = 120625960. Its totient is φ = 12313728.

The previous prime is 40021483. The next prime is 40021489. The reversal of 40021488 is 88412004.

40021488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40021481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8818 + ... + 12561.

Almost surely, 2^40021488 is an apocalyptic number.

40021488 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40021488 is an abundant number, since it is smaller than the sum of its proper divisors (80604472).

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

40021488 is a wasteful number, since it uses less digits than its factorization.

40021488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21406 (or 21397 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 40021488 is about 6326.2538678115. The cubic root of 40021488 is about 342.0564183111.

The spelling of 40021488 in words is "forty million, twenty-one thousand, four hundred eighty-eight".