40923720 has 192 divisors, whose sum is σ = 145267200. Its totient is φ = 9953280.

The previous prime is 40923691. The next prime is 40923733. The reversal of 40923720 is 2732904.

40923720 is a `hidden beast` number, since 409 + 237 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 211944 + ... + 212136.

It is an arithmetic number, because the mean of its divisors is an integer number (756600).

Almost surely, 2^40923720 is an apocalyptic number.

40923720 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 40923720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72633600).

40923720 is an abundant number, since it is smaller than the sum of its proper divisors (104343480).

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

40923720 is a wasteful number, since it uses less digits than its factorization.

40923720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 40923720 is about 6397.1649970905. The cubic root of 40923720 is about 344.6077457445.

The spelling of 40923720 in words is "forty million, nine hundred twenty-three thousand, seven hundred twenty".