28272951 has 36 divisors (see below), whose sum is σ = 48330984. Its totient is φ = 15876000.

The previous prime is 28272949. The next prime is 28272967. The reversal of 28272951 is 15927282.

It is not a de Polignac number, because 28272951 - 2¹ = 28272949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28272971) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26376 + ... + 27426.

Almost surely, 2^28272951 is an apocalyptic number.

28272951 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28272951 is a deficient number, since it is larger than the sum of its proper divisors (20058033).

28272951 is a wasteful number, since it uses less digits than its factorization.

28272951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1122 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 28272951 is about 5317.2315164943. The cubic root of 28272951 is about 304.6424224752.

It can be divided in two parts, 2827 and 2951, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 28272951 in words is "twenty-eight million, two hundred seventy-two thousand, nine hundred fifty-one".