3881457 has 24 divisors (see below), whose sum is σ = 6200064. Its totient is φ = 2327424.

The previous prime is 3881443. The next prime is 3881461. The reversal of 3881457 is 7541883.

It is not a de Polignac number, because 3881457 - 2⁴ = 3881441 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3881407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2968 + ... + 4070.

It is an arithmetic number, because the mean of its divisors is an integer number (258336).

Almost surely, 2^3881457 is an apocalyptic number.

It is an amenable number.

3881457 is a deficient number, since it is larger than the sum of its proper divisors (2318607).

3881457 is a wasteful number, since it uses less digits than its factorization.

3881457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1146 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 3881457 is about 1970.1413654862. The cubic root of 3881457 is about 157.1562267649.

The spelling of 3881457 in words is "three million, eight hundred eighty-one thousand, four hundred fifty-seven".