804728945 has 32 divisors (see below), whose sum is σ = 1080864000. Its totient is φ = 572292864.

The previous prime is 804728933. The next prime is 804728957. The reversal of 804728945 is 549827408.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (804728933) and next prime (804728957).

It is a cyclic number.

It is not a de Polignac number, because 804728945 - 2¹² = 804724849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 804728945.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112331 + ... + 119279.

It is an arithmetic number, because the mean of its divisors is an integer number (33777000).

Almost surely, 2^804728945 is an apocalyptic number.

It is an amenable number.

804728945 is a deficient number, since it is larger than the sum of its proper divisors (276135055).

804728945 is a wasteful number, since it uses less digits than its factorization.

804728945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7049.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 804728945 is about 28367.7447993315. The cubic root of 804728945 is about 930.1433258889.

The spelling of 804728945 in words is "eight hundred four million, seven hundred twenty-eight thousand, nine hundred forty-five".