38183940 has 96 divisors (see below), whose sum is σ = 122680320. Its totient is φ = 9849600.

The previous prime is 38183917. The next prime is 38183983. The reversal of 38183940 is 4938183.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 38183895 and 38183904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15600 + ... + 17880.

It is an arithmetic number, because the mean of its divisors is an integer number (1277920).

Almost surely, 2^38183940 is an apocalyptic number.

38183940 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 38183940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61340160).

38183940 is an abundant number, since it is smaller than the sum of its proper divisors (84496380).

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

38183940 is a wasteful number, since it uses less digits than its factorization.

38183940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330 (or 2322 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 38183940 is about 6179.3154960724. The cubic root of 38183940 is about 336.7391254468.

The spelling of 38183940 in words is "thirty-eight million, one hundred eighty-three thousand, nine hundred forty".