38220220 has 12 divisors (see below), whose sum is σ = 80262504. Its totient is φ = 15288080.

The previous prime is 38220211. The next prime is 38220251. The reversal of 38220220 is 2202283.

38220220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 955486 + ... + 955525.

It is an arithmetic number, because the mean of its divisors is an integer number (6688542).

Almost surely, 2^38220220 is an apocalyptic number.

It is an amenable number.

38220220 is an abundant number, since it is smaller than the sum of its proper divisors (42042284).

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

38220220 is a wasteful number, since it uses less digits than its factorization.

38220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911020 (or 1911018 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 38220220 is about 6182.2503993287. The cubic root of 38220220 is about 336.8457411974.

It can be divided in two parts, 382 and 20220, that added together give a palindrome (20602).

The spelling of 38220220 in words is "thirty-eight million, two hundred twenty thousand, two hundred twenty".