40026628 has 6 divisors (see below), whose sum is σ = 70046606. Its totient is φ = 20013312.

The previous prime is 40026599. The next prime is 40026629. The reversal of 40026628 is 82662004.

It can be written as a sum of positive squares in only one way, i.e., 36216324 + 3810304 = 6018^2 + 1952^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40026596 and 40026605.

It is not an unprimeable number, because it can be changed into a prime (40026629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003325 + ... + 5003332.

Almost surely, 2^40026628 is an apocalyptic number.

It is an amenable number.

40026628 is a deficient number, since it is larger than the sum of its proper divisors (30019978).

40026628 is a wasteful number, since it uses less digits than its factorization.

40026628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006661 (or 10006659 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 40026628 is about 6326.6600983457. The cubic root of 40026628 is about 342.0710612344.

It can be divided in two parts, 400 and 26628, that added together give a triangular number (27028 = T₂₃₂).

The spelling of 40026628 in words is "forty million, twenty-six thousand, six hundred twenty-eight".