1405232428 has 12 divisors (see below), whose sum is σ = 2459688112. Its totient is φ = 702464400.

The previous prime is 1405232383. The next prime is 1405232429. The reversal of 1405232428 is 8242325041.

It is a self number, because there is not a number n which added to its sum of digits gives 1405232428.

It is not an unprimeable number, because it can be changed into a prime (1405232429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15675 + ... + 55282.

Almost surely, 2^1405232428 is an apocalyptic number.

It is an amenable number.

1405232428 is a deficient number, since it is larger than the sum of its proper divisors (1054455684).

1405232428 is a wasteful number, since it uses less digits than its factorization.

1405232428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75912 (or 75910 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 1405232428 is about 37486.4299180383. The cubic root of 1405232428 is about 1120.0808902036.

Adding to 1405232428 its reverse (8242325041), we get a palindrome (9647557469).

The spelling of 1405232428 in words is "one billion, four hundred five million, two hundred thirty-two thousand, four hundred twenty-eight".