28762947 has 12 divisors (see below), whose sum is σ = 42887104. Its totient is φ = 18556560.

The previous prime is 28762939. The next prime is 28762961. The reversal of 28762947 is 74926782.

It is not a de Polignac number, because 28762947 - 2³ = 28762939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28762967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51268 + ... + 51825.

Almost surely, 2^28762947 is an apocalyptic number.

28762947 is a deficient number, since it is larger than the sum of its proper divisors (14124157).

28762947 is a wasteful number, since it uses less digits than its factorization.

28762947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103130 (or 103127 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 28762947 is about 5363.1098254651. The cubic root of 28762947 is about 306.3922625453.

The spelling of 28762947 in words is "twenty-eight million, seven hundred sixty-two thousand, nine hundred forty-seven".