40252890 has 32 divisors (see below), whose sum is σ = 96780096. Its totient is φ = 10714880.

The previous prime is 40252873. The next prime is 40252897. The reversal of 40252890 is 9825204.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (40252897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25669 + ... + 27191.

It is an arithmetic number, because the mean of its divisors is an integer number (3024378).

Almost surely, 2^40252890 is an apocalyptic number.

40252890 is an abundant number, since it is smaller than the sum of its proper divisors (56527206).

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

40252890 is a wasteful number, since it uses less digits than its factorization.

40252890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 40252890 is about 6344.5165300439. The cubic root of 40252890 is about 342.7144021390.

The spelling of 40252890 in words is "forty million, two hundred fifty-two thousand, eight hundred ninety".