40000626 has 48 divisors (see below), whose sum is σ = 94272984. Its totient is φ = 12206592.

The previous prime is 40000603. The next prime is 40000627. The reversal of 40000626 is 62600004.

40000626 is a `hidden beast` number, since 40 + 0 + 0 + 0 + 626 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 39050001 + 950625 = 6249^2 + 975^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40000599 and 40000608.

It is not an unprimeable number, because it can be changed into a prime (40000627) 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, 9556 + ... + 13088.

Almost surely, 2^40000626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40000626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47136492).

40000626 is an abundant number, since it is smaller than the sum of its proper divisors (54272358).

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

40000626 is a wasteful number, since it uses less digits than its factorization.

40000626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595 (or 3592 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40000626 is about 6324.6048097885. The cubic root of 40000626 is about 341.9969734009.

The spelling of 40000626 in words is "forty million, six hundred twenty-six", and thus it is an aban number.