40656380 has 12 divisors (see below), whose sum is σ = 85378440. Its totient is φ = 16262544.

The previous prime is 40656313. The next prime is 40656389. The reversal of 40656380 is 8365604.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40656389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016390 + ... + 1016429.

It is an arithmetic number, because the mean of its divisors is an integer number (7114870).

Almost surely, 2^40656380 is an apocalyptic number.

It is an amenable number.

40656380 is an abundant number, since it is smaller than the sum of its proper divisors (44722060).

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

40656380 is a wasteful number, since it uses less digits than its factorization.

40656380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032828 (or 2032826 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 40656380 is about 6376.2355665392. The cubic root of 40656380 is about 343.8557061137.

The spelling of 40656380 in words is "forty million, six hundred fifty-six thousand, three hundred eighty".