40506520 has 16 divisors (see below), whose sum is σ = 91139760. Its totient is φ = 16202592.

The previous prime is 40506511. The next prime is 40506569. The reversal of 40506520 is 2560504.

It is a junction number, because it is equal to n+sod(n) for n = 40506491 and 40506500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506292 + ... + 506371.

It is an arithmetic number, because the mean of its divisors is an integer number (5696235).

Almost surely, 2^40506520 is an apocalyptic number.

40506520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40506520 is an abundant number, since it is smaller than the sum of its proper divisors (50633240).

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

40506520 is a wasteful number, since it uses less digits than its factorization.

40506520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012674 (or 1012670 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 40506520 is about 6364.4732696430. The cubic root of 40506520 is about 343.4327002632.

The spelling of 40506520 in words is "forty million, five hundred six thousand, five hundred twenty".