40020708 has 96 divisors (see below), whose sum is σ = 116859904. Its totient is φ = 10378368.

The previous prime is 40020677. The next prime is 40020731. The reversal of 40020708 is 80702004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72891 + ... + 73437.

Almost surely, 2^40020708 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 40020708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58429952).

40020708 is an abundant number, since it is smaller than the sum of its proper divisors (76839196).

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

40020708 is a wasteful number, since it uses less digits than its factorization.

40020708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 40020708 is about 6326.1922196531. The cubic root of 40020708 is about 342.0541961237.

The spelling of 40020708 in words is "forty million, twenty thousand, seven hundred eight".