38397736 has 32 divisors (see below), whose sum is σ = 77976360. Its totient is φ = 17620992.

The previous prime is 38397721. The next prime is 38397743. The reversal of 38397736 is 63779383.

38397736 = T₂₄₂₄ + T₂₄₂₅ + ... + T₂₄₃₆.

It can be written as a sum of positive squares in 4 ways, for example, as 29095236 + 9302500 = 5394^2 + 3050^2 .

It is a super-2 number, since 2×38397736² = 2948772259851392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19116 + ... + 21028.

Almost surely, 2^38397736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38397736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38988180).

38397736 is an abundant number, since it is smaller than the sum of its proper divisors (39578624).

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

38397736 is a wasteful number, since it uses less digits than its factorization.

38397736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125 (or 2121 counting only the distinct ones).

The product of its digits is 571536, while the sum is 46.

The square root of 38397736 is about 6196.5906755247. The cubic root of 38397736 is about 337.3664356725.

The spelling of 38397736 in words is "thirty-eight million, three hundred ninety-seven thousand, seven hundred thirty-six".