40280075 has 24 divisors (see below), whose sum is σ = 55282176. Its totient is φ = 28868000.

The previous prime is 40280063. The next prime is 40280083. The reversal of 40280075 is 57008204.

It is not a de Polignac number, because 40280075 - 2⁴ = 40280059 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18494 + ... + 20556.

It is an arithmetic number, because the mean of its divisors is an integer number (2303424).

Almost surely, 2^40280075 is an apocalyptic number.

40280075 is a deficient number, since it is larger than the sum of its proper divisors (15002101).

40280075 is a wasteful number, since it uses less digits than its factorization.

40280075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155 (or 2150 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 40280075 is about 6346.6585696727. The cubic root of 40280075 is about 342.7915360992.

Adding to 40280075 its reverse (57008204), we get a palindrome (97288279).

The spelling of 40280075 in words is "forty million, two hundred eighty thousand, seventy-five".