40765720 has 64 divisors (see below), whose sum is σ = 95087520. Its totient is φ = 15719424.

The previous prime is 40765709. The next prime is 40765733. The reversal of 40765720 is 2756704.

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, 235554 + ... + 235726.

Almost surely, 2^40765720 is an apocalyptic number.

40765720 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 40765720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47543760).

40765720 is an abundant number, since it is smaller than the sum of its proper divisors (54321800).

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

40765720 is a wasteful number, since it uses less digits than its factorization.

40765720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 40765720 is about 6384.8038341049. The cubic root of 40765720 is about 344.1636817946.

The spelling of 40765720 in words is "forty million, seven hundred sixty-five thousand, seven hundred twenty".