38663898 has 64 divisors (see below), whose sum is σ = 100208640. Its totient is φ = 9657792.

The previous prime is 38663843. The next prime is 38663957. The reversal of 38663898 is 89836683.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38663898.

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, 8511 + ... + 12237.

It is an arithmetic number, because the mean of its divisors is an integer number (1565760).

Almost surely, 2^38663898 is an apocalyptic number.

38663898 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38663898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50104320).

38663898 is an abundant number, since it is smaller than the sum of its proper divisors (61544742).

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

38663898 is a wasteful number, since it uses less digits than its factorization.

38663898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771.

The product of its digits is 1492992, while the sum is 51.

The square root of 38663898 is about 6218.0300739060. The cubic root of 38663898 is about 338.1441503180.

The spelling of 38663898 in words is "thirty-eight million, six hundred sixty-three thousand, eight hundred ninety-eight".