1528072172 has 12 divisors (see below), whose sum is σ = 2917228776. Its totient is φ = 694578240.

The previous prime is 1528072171. The next prime is 1528072177. The reversal of 1528072172 is 2712708251.

It is not an unprimeable number, because it can be changed into a prime (1528072171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17364413 + ... + 17364500.

It is an arithmetic number, because the mean of its divisors is an integer number (243102398).

Almost surely, 2^1528072172 is an apocalyptic number.

It is an amenable number.

1528072172 is a deficient number, since it is larger than the sum of its proper divisors (1389156604).

1528072172 is a wasteful number, since it uses less digits than its factorization.

1528072172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34728928 (or 34728926 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 1528072172 is about 39090.5637206730. The cubic root of 1528072172 is about 1151.8111780206.

The spelling of 1528072172 in words is "one billion, five hundred twenty-eight million, seventy-two thousand, one hundred seventy-two".