40212738 has 24 divisors (see below), whose sum is σ = 88233600. Its totient is φ = 13234104.

The previous prime is 40212737. The next prime is 40212749. The reversal of 40212738 is 83721204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40212737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12718 + ... + 15561.

It is an arithmetic number, because the mean of its divisors is an integer number (3676400).

Almost surely, 2^40212738 is an apocalyptic number.

40212738 is an abundant number, since it is smaller than the sum of its proper divisors (48020862).

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

40212738 is a wasteful number, since it uses less digits than its factorization.

40212738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28366 (or 28363 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40212738 is about 6341.3514332514. The cubic root of 40212738 is about 342.6004124221.

The spelling of 40212738 in words is "forty million, two hundred twelve thousand, seven hundred thirty-eight".