10817421 has 8 divisors (see below), whose sum is σ = 14440800. Its totient is φ = 7202832.

The previous prime is 10817413. The next prime is 10817437. The reversal of 10817421 is 12471801.

10817421 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10817421 - 2³ = 10817413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10817391 and 10817400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10817021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1630 + ... + 4928.

It is an arithmetic number, because the mean of its divisors is an integer number (1805100).

Almost surely, 2^10817421 is an apocalyptic number.

It is an amenable number.

10817421 is a deficient number, since it is larger than the sum of its proper divisors (3623379).

10817421 is a wasteful number, since it uses less digits than its factorization.

10817421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 10817421 is about 3288.9847977758. The cubic root of 10817421 is about 221.1606770207.

The spelling of 10817421 in words is "ten million, eight hundred seventeen thousand, four hundred twenty-one".