28972463 has 8 divisors (see below), whose sum is σ = 31279248. Its totient is φ = 26676864.

The previous prime is 28972453. The next prime is 28972487. The reversal of 28972463 is 36427982.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28972463 is a prime.

It is a super-2 number, since 2×28972463² = 1678807224572738, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28972463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28972423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3056 + ... + 8202.

It is an arithmetic number, because the mean of its divisors is an integer number (3909906).

Almost surely, 2^28972463 is an apocalyptic number.

28972463 is a deficient number, since it is larger than the sum of its proper divisors (2306785).

28972463 is a wasteful number, since it uses less digits than its factorization.

28972463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5593.

The product of its digits is 145152, while the sum is 41.

The square root of 28972463 is about 5382.6074536418. The cubic root of 28972463 is about 307.1344076483.

The spelling of 28972463 in words is "twenty-eight million, nine hundred seventy-two thousand, four hundred sixty-three".