1403428 has 24 divisors (see below), whose sum is σ = 2677752. Its totient is φ = 639744.

The previous prime is 1403417. The next prime is 1403429. The reversal of 1403428 is 8243041.

It can be written as a sum of positive squares in 4 ways, for example, as 399424 + 1004004 = 632^2 + 1002^2 .

It is a super-2 number, since 2×1403428² = 3939220302368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1403399 and 1403408.

It is not an unprimeable number, because it can be changed into a prime (1403429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7026 + ... + 7222.

It is an arithmetic number, because the mean of its divisors is an integer number (111573).

2^1403428 is an apocalyptic number.

It is an amenable number.

1403428 is a deficient number, since it is larger than the sum of its proper divisors (1274324).

1403428 is a wasteful number, since it uses less digits than its factorization.

1403428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1403428 is about 1184.6636653498. The cubic root of 1403428 is about 111.9601261120.

Adding to 1403428 its reverse (8243041), we get a palindrome (9646469).

The spelling of 1403428 in words is "one million, four hundred three thousand, four hundred twenty-eight".