40028488 has 16 divisors (see below), whose sum is σ = 75313980. Its totient is φ = 19944768.

The previous prime is 40028477. The next prime is 40028501. The reversal of 40028488 is 88482004.

It can be written as a sum of positive squares in 2 ways, for example, as 37724164 + 2304324 = 6142^2 + 1518^2 .

It is a super-2 number, since 2×40028488² = 3204559703132288, which contains 22 as substring.

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, 6195 + ... + 10882.

Almost surely, 2^40028488 is an apocalyptic number.

It is an amenable number.

40028488 is a deficient number, since it is larger than the sum of its proper divisors (35285492).

40028488 is a wasteful number, since it uses less digits than its factorization.

40028488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17376 (or 17372 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 40028488 is about 6326.8070936295. The cubic root of 40028488 is about 342.0763597265.

The spelling of 40028488 in words is "forty million, twenty-eight thousand, four hundred eighty-eight".