40570920 has 96 divisors (see below), whose sum is σ = 142014600. Its totient is φ = 9985536.

The previous prime is 40570889. The next prime is 40570927. The reversal of 40570920 is 2907504.

40570920 is a `hidden beast` number, since 4 + 0 + 570 + 92 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 24265476 + 16305444 = 4926^2 + 4038^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40570927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346 + ... + 9014.

Almost surely, 2^40570920 is an apocalyptic number.

40570920 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 40570920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71007300).

40570920 is an abundant number, since it is smaller than the sum of its proper divisors (101443680).

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

40570920 is a wasteful number, since it uses less digits than its factorization.

40570920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8699 (or 8692 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 40570920 is about 6369.5305949497. The cubic root of 40570920 is about 343.6146080579.

The spelling of 40570920 in words is "forty million, five hundred seventy thousand, nine hundred twenty".