10840257 has 16 divisors (see below), whose sum is σ = 16434880. Its totient is φ = 7058016.

The previous prime is 10840243. The next prime is 10840259. The reversal of 10840257 is 75204801.

It is not a de Polignac number, because 10840257 - 2¹⁶ = 10774721 is a prime.

It is a super-2 number, since 2×10840257² = 235022343652098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10840257.

It is not an unprimeable number, because it can be changed into a prime (10840259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3508 + ... + 5829.

It is an arithmetic number, because the mean of its divisors is an integer number (1027180).

Almost surely, 2^10840257 is an apocalyptic number.

It is an amenable number.

10840257 is a deficient number, since it is larger than the sum of its proper divisors (5594623).

10840257 is an equidigital number, since it uses as much as digits as its factorization.

10840257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9389 (or 9383 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 10840257 is about 3292.4545554950. The cubic root of 10840257 is about 221.3161939257.

The spelling of 10840257 in words is "ten million, eight hundred forty thousand, two hundred fifty-seven".