38620140 has 96 divisors (see below), whose sum is σ = 118352640. Its totient is φ = 9351936.

The previous prime is 38620133. The next prime is 38620157. The reversal of 38620140 is 4102683.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 38620140.

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, 51891 + ... + 52629.

It is an arithmetic number, because the mean of its divisors is an integer number (1232840).

Almost surely, 2^38620140 is an apocalyptic number.

38620140 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 38620140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59176320).

38620140 is an abundant number, since it is smaller than the sum of its proper divisors (79732500).

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

38620140 is a wasteful number, since it uses less digits than its factorization.

38620140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 829 counting only the distinct ones).

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

The square root of 38620140 is about 6214.5104392864. The cubic root of 38620140 is about 338.0165368938.

The spelling of 38620140 in words is "thirty-eight million, six hundred twenty thousand, one hundred forty".