40138416 has 50 divisors (see below), whose sum is σ = 116175972. Its totient is φ = 13379040.

The previous prime is 40138409. The next prime is 40138421. The reversal of 40138416 is 61483104.

It is a super-2 number, since 2×40138416² = 3222184877978112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 40138416.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14190 + ... + 16781.

Almost surely, 2^40138416 is an apocalyptic number.

It is an amenable number.

40138416 is an abundant number, since it is smaller than the sum of its proper divisors (76037556).

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

40138416 is a wasteful number, since it uses less digits than its factorization.

40138416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30991 (or 30976 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 40138416 is about 6335.4886157265. The cubic root of 40138416 is about 342.3892152395.

The spelling of 40138416 in words is "forty million, one hundred thirty-eight thousand, four hundred sixteen".