38405416 has 24 divisors (see below), whose sum is σ = 83767770. Its totient is φ = 16459296.

The previous prime is 38405333. The next prime is 38405447. The reversal of 38405416 is 61450483.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19448100 + 18957316 = 4410^2 + 4354^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48595 + ... + 49378.

Almost surely, 2^38405416 is an apocalyptic number.

It is an amenable number.

38405416 is an abundant number, since it is smaller than the sum of its proper divisors (45362354).

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

38405416 is a wasteful number, since it uses less digits than its factorization.

38405416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97993 (or 97982 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 38405416 is about 6197.2103401450. The cubic root of 38405416 is about 337.3889265949.

Adding to 38405416 its reverse (61450483), we get a palindrome (99855899).

The spelling of 38405416 in words is "thirty-eight million, four hundred five thousand, four hundred sixteen".