28672542 has 24 divisors (see below), whose sum is σ = 64425816. Its totient is φ = 9557352.

The previous prime is 28672541. The next prime is 28672543. The reversal of 28672542 is 24527682.

It is an interprime number because it is at equal distance from previous prime (28672541) and next prime (28672543).

It is a super-2 number, since 2×28672542² = 1644229329483528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28672497 and 28672506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28672541) 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, 29013 + ... + 29984.

It is an arithmetic number, because the mean of its divisors is an integer number (2684409).

Almost surely, 2^28672542 is an apocalyptic number.

28672542 is an abundant number, since it is smaller than the sum of its proper divisors (35753274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28672542 is an equidigital number, since it uses as much as digits as its factorization.

28672542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59014 (or 59002 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 28672542 is about 5354.6747800403. The cubic root of 28672542 is about 306.0709178190.

The spelling of 28672542 in words is "twenty-eight million, six hundred seventy-two thousand, five hundred forty-two".