38220930 has 128 divisors (see below), whose sum is σ = 117884160. Its totient is φ = 8709120.

The previous prime is 38220929. The next prime is 38220977. The reversal of 38220930 is 3902283.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 38220894 and 38220903.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 50112 + ... + 50868.

It is an arithmetic number, because the mean of its divisors is an integer number (920970).

Almost surely, 2^38220930 is an apocalyptic number.

38220930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38220930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58942080).

38220930 is an abundant number, since it is smaller than the sum of its proper divisors (79663230).

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

38220930 is a wasteful number, since it uses less digits than its factorization.

38220930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 795 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 38220930 is about 6182.3078215178. The cubic root of 38220930 is about 336.8478269956.

It can be divided in two parts, 382 and 20930, that added together give a palindrome (21312).

The spelling of 38220930 in words is "thirty-eight million, two hundred twenty thousand, nine hundred thirty".