38406040 has 16 divisors (see below), whose sum is σ = 86413680. Its totient is φ = 15362400.

The previous prime is 38406029. The next prime is 38406073. The reversal of 38406040 is 4060483.

It is a junction number, because it is equal to n+sod(n) for n = 38405996 and 38406014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480036 + ... + 480115.

It is an arithmetic number, because the mean of its divisors is an integer number (5400855).

Almost surely, 2^38406040 is an apocalyptic number.

It is an amenable number.

38406040 is an abundant number, since it is smaller than the sum of its proper divisors (48007640).

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

38406040 is a wasteful number, since it uses less digits than its factorization.

38406040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960162 (or 960158 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 38406040 is about 6197.2606851737. The cubic root of 38406040 is about 337.3907538506.

The spelling of 38406040 in words is "thirty-eight million, four hundred six thousand, forty".