38081900 has 18 divisors (see below), whose sum is σ = 82637940. Its totient is φ = 15232720.

The previous prime is 38081899. The next prime is 38081903. The reversal of 38081900 is 918083.

It is a happy number.

It is a super-2 number, since 2×38081900² = 2900462215220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38081903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 190310 + ... + 190509.

Almost surely, 2^38081900 is an apocalyptic number.

It is an amenable number.

38081900 is an abundant number, since it is smaller than the sum of its proper divisors (44556040).

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

38081900 is a wasteful number, since it uses less digits than its factorization.

38081900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380833 (or 380826 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 38081900 is about 6171.0533946807. The cubic root of 38081900 is about 336.4388987572.

Adding to 38081900 its reverse (918083), we get a palindrome (38999983).

The spelling of 38081900 in words is "thirty-eight million, eighty-one thousand, nine hundred".