1057388 has 12 divisors (see below), whose sum is σ = 1947960. Its totient is φ = 500832.

The previous prime is 1057387. The next prime is 1057391. The reversal of 1057388 is 8837501.

It is a super-2 number, since 2×1057388² = 2236138765088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1057387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6881 + ... + 7032.

It is an arithmetic number, because the mean of its divisors is an integer number (162330).

2^1057388 is an apocalyptic number.

It is an amenable number.

1057388 is a deficient number, since it is larger than the sum of its proper divisors (890572).

1057388 is a wasteful number, since it uses less digits than its factorization.

1057388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13936 (or 13934 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1057388 is about 1028.2937323547. The cubic root of 1057388 is about 101.8774640276.

The spelling of 1057388 in words is "one million, fifty-seven thousand, three hundred eighty-eight".