38113440 has 96 divisors (see below), whose sum is σ = 120911616. Its totient is φ = 10091520.

The previous prime is 38113433. The next prime is 38113451. The reversal of 38113440 is 4431183.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a self number, because there is not a number n which added to its sum of digits gives 38113440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129934 + ... + 130226.

It is an arithmetic number, because the mean of its divisors is an integer number (1259496).

Almost surely, 2^38113440 is an apocalyptic number.

38113440 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 38113440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60455808).

38113440 is an abundant number, since it is smaller than the sum of its proper divisors (82798176).

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

38113440 is a wasteful number, since it uses less digits than its factorization.

38113440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 38113440 is about 6173.6083452062. The cubic root of 38113440 is about 336.5317543722.

The spelling of 38113440 in words is "thirty-eight million, one hundred thirteen thousand, four hundred forty".