38891250 has 60 divisors (see below), whose sum is σ = 105327222. Its totient is φ = 10368000.

The previous prime is 38891239. The next prime is 38891269. The reversal of 38891250 is 5219883.

It can be written as a sum of positive squares in 5 ways, for example, as 1912689 + 36978561 = 1383^2 + 6081^2 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 9522 + ... + 12978.

Almost surely, 2^38891250 is an apocalyptic number.

38891250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38891250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52663611).

38891250 is an abundant number, since it is smaller than the sum of its proper divisors (66435972).

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

38891250 is a wasteful number, since it uses less digits than its factorization.

38891250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485 (or 3467 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 38891250 is about 6236.2849517962. The cubic root of 38891250 is about 338.8056421083.

The spelling of 38891250 in words is "thirty-eight million, eight hundred ninety-one thousand, two hundred fifty".