1600072172 has 12 divisors (see below), whose sum is σ = 2806812120. Its totient is φ = 798125856.

The previous prime is 1600072139. The next prime is 1600072207. The reversal of 1600072172 is 2712700061.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475673 + ... + 479024.

It is an arithmetic number, because the mean of its divisors is an integer number (233901010).

Almost surely, 2^1600072172 is an apocalyptic number.

It is an amenable number.

1600072172 is a deficient number, since it is larger than the sum of its proper divisors (1206739948).

1600072172 is a wasteful number, since it uses less digits than its factorization.

1600072172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955120 (or 955118 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 1600072172 is about 40000.9021398268. The cubic root of 1600072172 is about 1169.6246810381.

The spelling of 1600072172 in words is "one billion, six hundred million, seventy-two thousand, one hundred seventy-two".