38222690 has 48 divisors (see below), whose sum is σ = 78140160. Its totient is φ = 13437600.

The previous prime is 38222689. The next prime is 38222693. The reversal of 38222690 is 9622283.

38222690 = 150² + 151² + ... + 490².

38222690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×38222690² = 2921948061672200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38222693) by changing a digit.

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, 37001 + ... + 38019.

It is an arithmetic number, because the mean of its divisors is an integer number (1627920).

Almost surely, 2^38222690 is an apocalyptic number.

38222690 is an abundant number, since it is smaller than the sum of its proper divisors (39917470).

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

38222690 is a wasteful number, since it uses less digits than its factorization.

38222690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 38222690 is about 6182.4501615460. The cubic root of 38222690 is about 336.8529973135.

The spelling of 38222690 in words is "thirty-eight million, two hundred twenty-two thousand, six hundred ninety".