40808772 has 120 divisors (see below), whose sum is σ = 117089280. Its totient is φ = 12337920.

The previous prime is 40808759. The next prime is 40808819. The reversal of 40808772 is 27780804.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 170629 + ... + 170867.

It is an arithmetic number, because the mean of its divisors is an integer number (975744).

Almost surely, 2^40808772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40808772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58544640).

40808772 is an abundant number, since it is smaller than the sum of its proper divisors (76280508).

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

40808772 is a wasteful number, since it uses less digits than its factorization.

40808772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 40808772 is about 6388.1743871000. The cubic root of 40808772 is about 344.2847943529.

The spelling of 40808772 in words is "forty million, eight hundred eight thousand, seven hundred seventy-two".