38369840 has 20 divisors (see below), whose sum is σ = 89210064. Its totient is φ = 15347904.

The previous prime is 38369839. The next prime is 38369861. The reversal of 38369840 is 4896383.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-4 number, since 4×38369840⁴ (a number of 31 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239732 + ... + 239891.

Almost surely, 2^38369840 is an apocalyptic number.

It is an amenable number.

38369840 is an abundant number, since it is smaller than the sum of its proper divisors (50840224).

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

38369840 is a wasteful number, since it uses less digits than its factorization.

38369840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479636 (or 479630 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 38369840 is about 6194.3393513756. The cubic root of 38369840 is about 337.2847168433.

The spelling of 38369840 in words is "thirty-eight million, three hundred sixty-nine thousand, eight hundred forty".