38810040 has 64 divisors (see below), whose sum is σ = 119590560. Its totient is φ = 10068480.

The previous prime is 38810029. The next prime is 38810041. The reversal of 38810040 is 4001883.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38810041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70 + ... + 8810.

Almost surely, 2^38810040 is an apocalyptic number.

38810040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38810040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59795280).

38810040 is an abundant number, since it is smaller than the sum of its proper divisors (80780520).

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

38810040 is a wasteful number, since it uses less digits than its factorization.

38810040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8792 (or 8788 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 38810040 is about 6229.7704612610. The cubic root of 38810040 is about 338.5696543247.

The spelling of 38810040 in words is "thirty-eight million, eight hundred ten thousand, forty".