1056428 has 12 divisors (see below), whose sum is σ = 1866480. Its totient is φ = 523152.

The previous prime is 1056401. The next prime is 1056443. The reversal of 1056428 is 8246501.

It is a super-2 number, since 2×1056428² = 2232080238368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1056397 and 1056406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776 + ... + 1647.

It is an arithmetic number, because the mean of its divisors is an integer number (155540).

2^1056428 is an apocalyptic number.

It is an amenable number.

1056428 is a deficient number, since it is larger than the sum of its proper divisors (810052).

1056428 is a wasteful number, since it uses less digits than its factorization.

1056428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536 (or 2534 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1056428 is about 1027.8268336641. The cubic root of 1056428 is about 101.8466232582.

The spelling of 1056428 in words is "one million, fifty-six thousand, four hundred twenty-eight".