38456220 has 72 divisors (see below), whose sum is σ = 118378512. Its totient is φ = 9320960.

The previous prime is 38456219. The next prime is 38456251. The reversal of 38456220 is 2265483.

38456220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4612 + ... + 9908.

It is an arithmetic number, because the mean of its divisors is an integer number (1644146).

Almost surely, 2^38456220 is an apocalyptic number.

38456220 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 38456220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59189256).

38456220 is an abundant number, since it is smaller than the sum of its proper divisors (79922292).

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

38456220 is a wasteful number, since it uses less digits than its factorization.

38456220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5331 (or 5318 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 38456220 is about 6201.3079265587. The cubic root of 38456220 is about 337.5376309206.

The spelling of 38456220 in words is "thirty-eight million, four hundred fifty-six thousand, two hundred twenty".