900529728 has 56 divisors (see below), whose sum is σ = 2723034432. Its totient is φ = 257293824.

The previous prime is 900529727. The next prime is 900529733. The reversal of 900529728 is 827925009.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 900529728.

It is not an unprimeable number, because it can be changed into a prime (900529727) 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, 333675 + ... + 336362.

Almost surely, 2^900529728 is an apocalyptic number.

It is an amenable number.

900529728 is an abundant number, since it is smaller than the sum of its proper divisors (1822504704).

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

900529728 is a wasteful number, since it uses less digits than its factorization.

900529728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670059 (or 670049 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 900529728 is about 30008.8275012537. The cubic root of 900529728 is about 965.6787721797.

The spelling of 900529728 in words is "nine hundred million, five hundred twenty-nine thousand, seven hundred twenty-eight".