40732720 has 60 divisors (see below), whose sum is σ = 110175984. Its totient is φ = 13964160.

The previous prime is 40732709. The next prime is 40732763. The reversal of 40732720 is 2723704.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1276 + ... + 9115.

Almost surely, 2^40732720 is an apocalyptic number.

40732720 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 40732720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55087992).

40732720 is an abundant number, since it is smaller than the sum of its proper divisors (69443264).

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

40732720 is a wasteful number, since it uses less digits than its factorization.

40732720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10418 (or 10405 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 40732720 is about 6382.2190498290. The cubic root of 40732720 is about 344.0707894699.

The spelling of 40732720 in words is "forty million, seven hundred thirty-two thousand, seven hundred twenty".