38421100 has 36 divisors (see below), whose sum is σ = 85416408. Its totient is φ = 14992000.

The previous prime is 38421091. The next prime is 38421101. The reversal of 38421100 is 112483.

It is not an unprimeable number, because it can be changed into a prime (38421101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 586 + ... + 8785.

It is an arithmetic number, because the mean of its divisors is an integer number (2372678).

Almost surely, 2^38421100 is an apocalyptic number.

It is an amenable number.

38421100 is an abundant number, since it is smaller than the sum of its proper divisors (46995308).

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

38421100 is a wasteful number, since it uses less digits than its factorization.

38421100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9426 (or 9419 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 38421100 is about 6198.4756190534. The cubic root of 38421100 is about 337.4348479632.

Adding to 38421100 its reverse (112483), we get a palindrome (38533583).

The spelling of 38421100 in words is "thirty-eight million, four hundred twenty-one thousand, one hundred".