10139856 has 20 divisors (see below), whose sum is σ = 26194752. Its totient is φ = 3379936.

The previous prime is 10139809. The next prime is 10139867. The reversal of 10139856 is 65893101.

10139856 = T₁₀₈ + T₁₀₉ + ... + T₃₉₅.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 105576 + ... + 105671.

Almost surely, 2^10139856 is an apocalyptic number.

10139856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10139856 is an abundant number, since it is smaller than the sum of its proper divisors (16054896).

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

10139856 is a wasteful number, since it uses less digits than its factorization.

10139856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211258 (or 211252 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 10139856 is about 3184.3140548633. The cubic root of 10139856 is about 216.4431915410.

The spelling of 10139856 in words is "ten million, one hundred thirty-nine thousand, eight hundred fifty-six".