38450881 has 16 divisors (see below), whose sum is σ = 46597120. Its totient is φ = 31026240.

The previous prime is 38450869. The next prime is 38450903. The reversal of 38450881 is 18805483.

It is not a de Polignac number, because 38450881 - 2²⁵ = 4896449 is a prime.

It is a super-2 number, since 2×38450881² = 2956940499352322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38450881.

It is not an unprimeable number, because it can be changed into a prime (38430881) 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, 5635 + ... + 10423.

It is an arithmetic number, because the mean of its divisors is an integer number (2912320).

Almost surely, 2^38450881 is an apocalyptic number.

38450881 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

38450881 is a deficient number, since it is larger than the sum of its proper divisors (8146239).

38450881 is a wasteful number, since it uses less digits than its factorization.

38450881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4864.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 38450881 is about 6200.8774379115. The cubic root of 38450881 is about 337.5220097215.

The spelling of 38450881 in words is "thirty-eight million, four hundred fifty thousand, eight hundred eighty-one".