40613720 has 64 divisors (see below), whose sum is σ = 107827200. Its totient is φ = 13472640.

The previous prime is 40613719. The next prime is 40613743. The reversal of 40613720 is 2731604.

40613720 = T₃₄₉ + T₃₅₀ + ... + T₆₅₈.

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, 6341 + ... + 11019.

It is an arithmetic number, because the mean of its divisors is an integer number (1684800).

Almost surely, 2^40613720 is an apocalyptic number.

40613720 is a gapful number since it is divisible by the number (40) 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 40613720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53913600).

40613720 is an abundant number, since it is smaller than the sum of its proper divisors (67213480).

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

40613720 is a wasteful number, since it uses less digits than its factorization.

40613720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4728 (or 4724 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 40613720 is about 6372.8894545567. The cubic root of 40613720 is about 343.7353968452.

The spelling of 40613720 in words is "forty million, six hundred thirteen thousand, seven hundred twenty".