28624038 has 16 divisors (see below), whose sum is σ = 57328560. Its totient is φ = 9527936.

The previous prime is 28624033. The next prime is 28624087. The reversal of 28624038 is 83042682.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28624031) 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, 1906 + ... + 7802.

It is an arithmetic number, because the mean of its divisors is an integer number (3583035).

Almost surely, 2^28624038 is an apocalyptic number.

28624038 is an abundant number, since it is smaller than the sum of its proper divisors (28704522).

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

28624038 is a wasteful number, since it uses less digits than its factorization.

28624038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 28624038 is about 5350.1437363869. The cubic root of 28624038 is about 305.8982317824.

The spelling of 28624038 in words is "twenty-eight million, six hundred twenty-four thousand, thirty-eight".