38226720 has 192 divisors, whose sum is σ = 142442496. Its totient is φ = 8432640.

The previous prime is 38226709. The next prime is 38226731. The reversal of 38226720 is 2762283.

It is an interprime number because it is at equal distance from previous prime (38226709) and next prime (38226731).

It is a super-2 number, since 2×38226720² = 2922564243916800, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103977 + ... + 104343.

It is an arithmetic number, because the mean of its divisors is an integer number (741888).

Almost surely, 2^38226720 is an apocalyptic number.

38226720 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 38226720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71221248).

38226720 is an abundant number, since it is smaller than the sum of its proper divisors (104215776).

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

38226720 is a wasteful number, since it uses less digits than its factorization.

38226720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 38226720 is about 6182.7760755182. The cubic root of 38226720 is about 336.8648355686.

The spelling of 38226720 in words is "thirty-eight million, two hundred twenty-six thousand, seven hundred twenty".