38223690 has 32 divisors (see below), whose sum is σ = 93692160. Its totient is φ = 9975744.

The previous prime is 38223683. The next prime is 38223697. The reversal of 38223690 is 9632283.

It is an interprime number because it is at equal distance from previous prime (38223683) and next prime (38223697).

It is a super-2 number, since 2×38223690² = 2922100954432200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38223697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12145 + ... + 14964.

It is an arithmetic number, because the mean of its divisors is an integer number (2927880).

Almost surely, 2^38223690 is an apocalyptic number.

38223690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38223690 is an abundant number, since it is smaller than the sum of its proper divisors (55468470).

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

38223690 is a wasteful number, since it uses less digits than its factorization.

38223690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27166.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 38223690 is about 6182.5310351020. The cubic root of 38223690 is about 336.8559349234.

The spelling of 38223690 in words is "thirty-eight million, two hundred twenty-three thousand, six hundred ninety".