10421856 has 36 divisors (see below), whose sum is σ = 29637972. Its totient is φ = 3473856.

The previous prime is 10421837. The next prime is 10421863. The reversal of 10421856 is 65812401.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17806 + ... + 18381.

It is an arithmetic number, because the mean of its divisors is an integer number (823277).

Almost surely, 2^10421856 is an apocalyptic number.

10421856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10421856 is an abundant number, since it is smaller than the sum of its proper divisors (19216116).

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

10421856 is a wasteful number, since it uses less digits than its factorization.

10421856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36203 (or 36192 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 10421856 is about 3228.2899498031. The cubic root of 10421856 is about 218.4313765652.

The spelling of 10421856 in words is "ten million, four hundred twenty-one thousand, eight hundred fifty-six".