1791272428 has 48 divisors (see below), whose sum is σ = 3477196800. Its totient is φ = 800642880.

The previous prime is 1791272401. The next prime is 1791272449. The reversal of 1791272428 is 8242721971.

It is a super-2 number, since 2×1791272428² = 6417313822626030368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665301 + ... + 667987.

It is an arithmetic number, because the mean of its divisors is an integer number (72441600).

Almost surely, 2^1791272428 is an apocalyptic number.

It is an amenable number.

1791272428 is a deficient number, since it is larger than the sum of its proper divisors (1685924372).

1791272428 is a wasteful number, since it uses less digits than its factorization.

1791272428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2950 (or 2948 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 1791272428 is about 42323.4264680921. The cubic root of 1791272428 is about 1214.4711812961.

The spelling of 1791272428 in words is "one billion, seven hundred ninety-one million, two hundred seventy-two thousand, four hundred twenty-eight".