1529228728 has 8 divisors (see below), whose sum is σ = 2867303880. Its totient is φ = 764614360.

The previous prime is 1529228677. The next prime is 1529228731. The reversal of 1529228728 is 8278229251.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95576788 + ... + 95576803.

It is an arithmetic number, because the mean of its divisors is an integer number (358412985).

Almost surely, 2^1529228728 is an apocalyptic number.

It is an amenable number.

1529228728 is a deficient number, since it is larger than the sum of its proper divisors (1338075152).

1529228728 is a wasteful number, since it uses less digits than its factorization.

1529228728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191153597 (or 191153593 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 1529228728 is about 39105.3542114120. The cubic root of 1529228728 is about 1152.1016961887.

The spelling of 1529228728 in words is "one billion, five hundred twenty-nine million, two hundred twenty-eight thousand, seven hundred twenty-eight".