28632641 has 8 divisors (see below), whose sum is σ = 30831840. Its totient is φ = 26490688.

The previous prime is 28632587. The next prime is 28632647. The reversal of 28632641 is 14623682.

28632641 = T₄₇₈ + T₄₇₉ + ... + T₆₅₄.

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

It is a cyclic number.

It is not a de Polignac number, because 28632641 - 2⁶ = 28632577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28632598 and 28632607.

It is not an unprimeable number, because it can be changed into a prime (28632647) 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, 13271 + ... + 15276.

It is an arithmetic number, because the mean of its divisors is an integer number (3853980).

Almost surely, 2^28632641 is an apocalyptic number.

It is an amenable number.

28632641 is a deficient number, since it is larger than the sum of its proper divisors (2199199).

28632641 is a wasteful number, since it uses less digits than its factorization.

28632641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28623.

The product of its digits is 13824, while the sum is 32.

The square root of 28632641 is about 5350.9476730762. The cubic root of 28632641 is about 305.9288747789.

The spelling of 28632641 in words is "twenty-eight million, six hundred thirty-two thousand, six hundred forty-one".