40451238 has 24 divisors (see below), whose sum is σ = 90891528. Its totient is φ = 13483584.

The previous prime is 40451233. The next prime is 40451251. The reversal of 40451238 is 83215404.

40451238 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 (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40451233) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 41131 + ... + 42102.

It is an arithmetic number, because the mean of its divisors is an integer number (3787147).

Almost surely, 2^40451238 is an apocalyptic number.

40451238 is an abundant number, since it is smaller than the sum of its proper divisors (50440290).

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

40451238 is an equidigital number, since it uses as much as digits as its factorization.

40451238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83250 (or 83238 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 40451238 is about 6360.1287722813. The cubic root of 40451238 is about 343.2763938210.

It can be divided in two parts, 404512 and 38, that added together give a triangular number (404550 = T₈₉₉).

The spelling of 40451238 in words is "forty million, four hundred fifty-one thousand, two hundred thirty-eight".