40704720 has 80 divisors (see below), whose sum is σ = 144216960. Its totient is φ = 9303552.

The previous prime is 40704709. The next prime is 40704743. The reversal of 40704720 is 2740704.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 10435 + ... + 13794.

It is an arithmetic number, because the mean of its divisors is an integer number (1802712).

Almost surely, 2^40704720 is an apocalyptic number.

40704720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40704720 is an abundant number, since it is smaller than the sum of its proper divisors (103512240).

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

40704720 is a wasteful number, since it uses less digits than its factorization.

40704720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24252 (or 24246 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 40704720 is about 6380.0250783206. The cubic root of 40704720 is about 343.9919323870.

The spelling of 40704720 in words is "forty million, seven hundred four thousand, seven hundred twenty".