10138890 has 32 divisors (see below), whose sum is σ = 24929856. Its totient is φ = 2637440.

The previous prime is 10138889. The next prime is 10138901. The reversal of 10138890 is 9883101.

10138890 = 1422² + 1423² + ... + 1426².

It is a super-3 number, since 3×10138890³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 2892 + ... + 5351.

It is an arithmetic number, because the mean of its divisors is an integer number (779058).

Almost surely, 2^10138890 is an apocalyptic number.

10138890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10138890 is an abundant number, since it is smaller than the sum of its proper divisors (14790966).

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

10138890 is a wasteful number, since it uses less digits than its factorization.

10138890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8294.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 10138890 is about 3184.1623702318. The cubic root of 10138890 is about 216.4363179797.

The spelling of 10138890 in words is "ten million, one hundred thirty-eight thousand, eight hundred ninety".