40920633 has 20 divisors (see below), whose sum is σ = 65832228. Its totient is φ = 25181280.

The previous prime is 40920613. The next prime is 40920679. The reversal of 40920633 is 33602904.

40920633 is a `hidden beast` number, since 4 + 0 + 9 + 20 + 633 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21233664 + 19686969 = 4608^2 + 4437^2 .

It is not a de Polignac number, because 40920633 - 2¹² = 40916537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 40920597 and 40920606.

It is not an unprimeable number, because it can be changed into a prime (40920613) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18378 + ... + 20483.

Almost surely, 2^40920633 is an apocalyptic number.

It is an amenable number.

40920633 is a deficient number, since it is larger than the sum of its proper divisors (24911595).

40920633 is a wasteful number, since it uses less digits than its factorization.

40920633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38886 (or 38877 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 40920633 is about 6396.9237137862. The cubic root of 40920633 is about 344.5990805917.

The spelling of 40920633 in words is "forty million, nine hundred twenty thousand, six hundred thirty-three".