40745808 has 80 divisors (see below), whose sum is σ = 117730560. Its totient is φ = 13492224.

The previous prime is 40745797. The next prime is 40745827. The reversal of 40745808 is 80854704.

40745808 is a `hidden beast` number, since 4 + 0 + 74 + 580 + 8 = 666.

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

It is a congruent number.

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, 110841 + ... + 111207.

It is an arithmetic number, because the mean of its divisors is an integer number (1471632).

Almost surely, 2^40745808 is an apocalyptic number.

40745808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40745808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58865280).

40745808 is an abundant number, since it is smaller than the sum of its proper divisors (76984752).

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

40745808 is a wasteful number, since it uses less digits than its factorization.

40745808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 40745808 is about 6383.2443161765. The cubic root of 40745808 is about 344.1076371300.

The spelling of 40745808 in words is "forty million, seven hundred forty-five thousand, eight hundred eight".