1429435728 has 80 divisors (see below), whose sum is σ = 4689164160. Its totient is φ = 408409344.

The previous prime is 1429435727. The next prime is 1429435783. The reversal of 1429435728 is 8275349241.

1429435728 is a `hidden beast` number, since 1 + 4 + 294 + 357 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1429435727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233325 + ... + 239372.

It is an arithmetic number, because the mean of its divisors is an integer number (58614552).

Almost surely, 2^1429435728 is an apocalyptic number.

1429435728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1429435728 is an abundant number, since it is smaller than the sum of its proper divisors (3259728432).

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

1429435728 is a wasteful number, since it uses less digits than its factorization.

1429435728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472721 (or 472709 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 1429435728 is about 37807.8791788167. The cubic root of 1429435728 is about 1126.4749649135.

The spelling of 1429435728 in words is "one billion, four hundred twenty-nine million, four hundred thirty-five thousand, seven hundred twenty-eight".