40213044 has 48 divisors (see below), whose sum is σ = 109748800. Its totient is φ = 12698208.

The previous prime is 40213027. The next prime is 40213057. The reversal of 40213044 is 44031204.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7747 + ... + 11850.

Almost surely, 2^40213044 is an apocalyptic number.

It is an amenable number.

40213044 is an abundant number, since it is smaller than the sum of its proper divisors (69535756).

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

40213044 is a wasteful number, since it uses less digits than its factorization.

40213044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19629 (or 19621 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40213044 is about 6341.3755605547. The cubic root of 40213044 is about 342.6012814291.

Adding to 40213044 its reverse (44031204), we get a palindrome (84244248).

The spelling of 40213044 in words is "forty million, two hundred thirteen thousand, forty-four".