40364720 has 40 divisors (see below), whose sum is σ = 102381840. Its totient is φ = 14677760.

The previous prime is 40364719. The next prime is 40364729. The reversal of 40364720 is 2746304.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 40364720.

It is not an unprimeable number, because it can be changed into a prime (40364729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22055 + ... + 23814.

It is an arithmetic number, because the mean of its divisors is an integer number (2559546).

Almost surely, 2^40364720 is an apocalyptic number.

40364720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40364720 is an abundant number, since it is smaller than the sum of its proper divisors (62017120).

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

40364720 is a wasteful number, since it uses less digits than its factorization.

40364720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45893 (or 45887 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 40364720 is about 6353.3235396916. The cubic root of 40364720 is about 343.0314834239.

The spelling of 40364720 in words is "forty million, three hundred sixty-four thousand, seven hundred twenty".