40242628 has 12 divisors (see below), whose sum is σ = 70733740. Its totient is φ = 20032992.

The previous prime is 40242613. The next prime is 40242659. The reversal of 40242628 is 82624204.

It can be written as a sum of positive squares in 2 ways, for example, as 18731584 + 21511044 = 4328^2 + 4638^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40242596 and 40242605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21051 + ... + 22882.

Almost surely, 2^40242628 is an apocalyptic number.

It is an amenable number.

40242628 is a deficient number, since it is larger than the sum of its proper divisors (30491112).

40242628 is a wasteful number, since it uses less digits than its factorization.

40242628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44166 (or 44164 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 40242628 is about 6343.7077486278. The cubic root of 40242628 is about 342.6852759975.

The spelling of 40242628 in words is "forty million, two hundred forty-two thousand, six hundred twenty-eight".