40420788 has 24 divisors (see below), whose sum is σ = 94439520. Its totient is φ = 13455840.

The previous prime is 40420777. The next prime is 40420813. The reversal of 40420788 is 88702404.

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, 9918 + ... + 13386.

It is an arithmetic number, because the mean of its divisors is an integer number (3934980).

Almost surely, 2^40420788 is an apocalyptic number.

It is an amenable number.

40420788 is an abundant number, since it is smaller than the sum of its proper divisors (54018732).

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

40420788 is a wasteful number, since it uses less digits than its factorization.

40420788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4447 (or 4445 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 40420788 is about 6357.7345021635. The cubic root of 40420788 is about 343.1902374954.

The spelling of 40420788 in words is "forty million, four hundred twenty thousand, seven hundred eighty-eight".