1403932428 has 18 divisors (see below), whose sum is σ = 3548829284. Its totient is φ = 467977464.

The previous prime is 1403932381. The next prime is 1403932447. The reversal of 1403932428 is 8242393041.

1403932428 is a `hidden beast` number, since 1 + 403 + 9 + 3 + 242 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 38998123 = 1403932428 / (1 + 4 + 0 + 3 + 9 + 3 + 2 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 1403932392 and 1403932401.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19499026 + ... + 19499097.

Almost surely, 2^1403932428 is an apocalyptic number.

1403932428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1403932428 is an abundant number, since it is smaller than the sum of its proper divisors (2144896856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1403932428 is a wasteful number, since it uses less digits than its factorization.

1403932428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38998133 (or 38998128 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1403932428 is about 37469.0862979070. The cubic root of 1403932428 is about 1119.7353828507.

The spelling of 1403932428 in words is "one billion, four hundred three million, nine hundred thirty-two thousand, four hundred twenty-eight".