28072024 has 24 divisors (see below), whose sum is σ = 53353260. Its totient is φ = 13846976.

The previous prime is 28072021. The next prime is 28072039. The reversal of 28072024 is 42027082.

It is a self number, because there is not a number n which added to its sum of digits gives 28072024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28072021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63147 + ... + 63589.

Almost surely, 2^28072024 is an apocalyptic number.

It is an amenable number.

28072024 is a deficient number, since it is larger than the sum of its proper divisors (25281236).

28072024 is an equidigital number, since it uses as much as digits as its factorization.

28072024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 28072024 is about 5298.3038795448. The cubic root of 28072024 is about 303.9190400754.

The spelling of 28072024 in words is "twenty-eight million, seventy-two thousand, twenty-four".