38100990 has 16 divisors (see below), whose sum is σ = 91442448. Its totient is φ = 10160256.

The previous prime is 38100971. The next prime is 38100991. The reversal of 38100990 is 9900183.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1270033 = 38100990 / (3 + 8 + 1 + 0 + 0 + 9 + 9 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38100991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634987 + ... + 635046.

It is an arithmetic number, because the mean of its divisors is an integer number (5715153).

Almost surely, 2^38100990 is an apocalyptic number.

38100990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38100990 is an abundant number, since it is smaller than the sum of its proper divisors (53341458).

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

38100990 is a wasteful number, since it uses less digits than its factorization.

38100990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270043.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 38100990 is about 6172.5999384376. The cubic root of 38100990 is about 336.4951069618.

The spelling of 38100990 in words is "thirty-eight million, one hundred thousand, nine hundred ninety".