1057398 has 32 divisors (see below), whose sum is σ = 2246400. Its totient is φ = 331296.

The previous prime is 1057393. The next prime is 1057411. The reversal of 1057398 is 8937501.

It is a super-2 number, since 2×1057398² = 2236181060808, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057391) 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, 10215 + ... + 10317.

It is an arithmetic number, because the mean of its divisors is an integer number (70200).

2^1057398 is an apocalyptic number.

1057398 is an abundant number, since it is smaller than the sum of its proper divisors (1189002).

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

1057398 is a wasteful number, since it uses less digits than its factorization.

1057398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 1057398 is about 1028.2985947671. The cubic root of 1057398 is about 101.8777851874.

It can be divided in two parts, 105 and 7398, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 1057398 in words is "one million, fifty-seven thousand, three hundred ninety-eight".