40807780 has 96 divisors (see below), whose sum is σ = 97993728. Its totient is φ = 14169600.

The previous prime is 40807777. The next prime is 40807783. The reversal of 40807780 is 8770804.

It is an interprime number because it is at equal distance from previous prime (40807777) and next prime (40807783).

It is not an unprimeable number, because it can be changed into a prime (40807783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491619 + ... + 491701.

It is an arithmetic number, because the mean of its divisors is an integer number (1020768).

Almost surely, 2^40807780 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 40807780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48996864).

40807780 is an abundant number, since it is smaller than the sum of its proper divisors (57185948).

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

40807780 is a wasteful number, since it uses less digits than its factorization.

40807780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 40807780 is about 6388.0967431622. The cubic root of 40807780 is about 344.2820046481.

The spelling of 40807780 in words is "forty million, eight hundred seven thousand, seven hundred eighty".