28632501 has 8 divisors (see below), whose sum is σ = 42418560. Its totient is φ = 19088316.

The previous prime is 28632497. The next prime is 28632503. The reversal of 28632501 is 10523682.

28632501 is a `hidden beast` number, since 28 + 632 + 5 + 0 + 1 = 666.

It is not a de Polignac number, because 28632501 - 2² = 28632497 is a prime.

It is a super-2 number, since 2×28632501² = 1639640227030002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1060463 = 28632501 / (2 + 8 + 6 + 3 + 2 + 5 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28632503) 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, 530205 + ... + 530258.

It is an arithmetic number, because the mean of its divisors is an integer number (5302320).

Almost surely, 2^28632501 is an apocalyptic number.

It is an amenable number.

28632501 is a deficient number, since it is larger than the sum of its proper divisors (13786059).

28632501 is a wasteful number, since it uses less digits than its factorization.

28632501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060472 (or 1060466 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 28632501 is about 5350.9345912653. The cubic root of 28632501 is about 305.9283761625.

The spelling of 28632501 in words is "twenty-eight million, six hundred thirty-two thousand, five hundred one".