38299890 has 32 divisors (see below), whose sum is σ = 92082816. Its totient is φ = 10195200.

The previous prime is 38299871. The next prime is 38299903. The reversal of 38299890 is 9899283.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 31290 + ... + 32490.

It is an arithmetic number, because the mean of its divisors is an integer number (2877588).

Almost surely, 2^38299890 is an apocalyptic number.

38299890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38299890 is an abundant number, since it is smaller than the sum of its proper divisors (53782926).

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

38299890 is a wasteful number, since it uses less digits than its factorization.

38299890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274.

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 38299890 is about 6188.6904915337. The cubic root of 38299890 is about 337.0796302652.

The spelling of 38299890 in words is "thirty-eight million, two hundred ninety-nine thousand, eight hundred ninety".