38690040 has 32 divisors (see below), whose sum is σ = 116070480. Its totient is φ = 10317312.

The previous prime is 38690039. The next prime is 38690081. The reversal of 38690040 is 4009683.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161089 + ... + 161328.

Almost surely, 2^38690040 is an apocalyptic number.

38690040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38690040 is an abundant number, since it is smaller than the sum of its proper divisors (77380440).

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

38690040 is a wasteful number, since it uses less digits than its factorization.

38690040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322431 (or 322427 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 38690040 is about 6220.1318314004. The cubic root of 38690040 is about 338.2203434705.

The spelling of 38690040 in words is "thirty-eight million, six hundred ninety thousand, forty".