40257492 has 24 divisors (see below), whose sum is σ = 102473952. Its totient is φ = 12199200.

The previous prime is 40257487. The next prime is 40257509. The reversal of 40257492 is 29475204.

40257492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152359 + ... + 152622.

It is an arithmetic number, because the mean of its divisors is an integer number (4269748).

Almost surely, 2^40257492 is an apocalyptic number.

It is an amenable number.

40257492 is an abundant number, since it is smaller than the sum of its proper divisors (62216460).

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

40257492 is a wasteful number, since it uses less digits than its factorization.

40257492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304999 (or 304997 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 40257492 is about 6344.8791950675. The cubic root of 40257492 is about 342.7274621667.

The spelling of 40257492 in words is "forty million, two hundred fifty-seven thousand, four hundred ninety-two".