1403456 has 14 divisors (see below), whose sum is σ = 2785110. Its totient is φ = 701696.

The previous prime is 1403453. The next prime is 1403459. The reversal of 1403456 is 6543041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1403453) and next prime (1403459).

It can be written as a sum of positive squares in only one way, i.e., 1401856 + 1600 = 1184^2 + 40^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1403453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10901 + ... + 11028.

2^1403456 is an apocalyptic number.

1403456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1403456 is a deficient number, since it is larger than the sum of its proper divisors (1381654).

1403456 is an equidigital number, since it uses as much as digits as its factorization.

1403456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21941 (or 21931 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1403456 is about 1184.6754829910. The cubic root of 1403456 is about 111.9608706848.

Adding to 1403456 its reverse (6543041), we get a palindrome (7946497).

The spelling of 1403456 in words is "one million, four hundred three thousand, four hundred fifty-six".