2381457 has 16 divisors (see below), whose sum is σ = 3447360. Its totient is φ = 1453632.

The previous prime is 2381453. The next prime is 2381473. The reversal of 2381457 is 7541832.

It is not a de Polignac number, because 2381457 - 2² = 2381453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2381453) 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, 8719 + ... + 8987.

It is an arithmetic number, because the mean of its divisors is an integer number (215460).

2^2381457 is an apocalyptic number.

It is an amenable number.

2381457 is a deficient number, since it is larger than the sum of its proper divisors (1065903).

2381457 is a wasteful number, since it uses less digits than its factorization.

2381457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512.

The product of its digits is 6720, while the sum is 30.

The square root of 2381457 is about 1543.1970062179. The cubic root of 2381457 is about 133.5408843904.

It can be divided in two parts, 23814 and 57, that added together give a triangular number (23871 = T₂₁₈).

The spelling of 2381457 in words is "two million, three hundred eighty-one thousand, four hundred fifty-seven".