28513670 has 16 divisors (see below), whose sum is σ = 53094960. Its totient is φ = 11012064.

The previous prime is 28513669. The next prime is 28513679. The reversal of 28513670 is 7631582.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28513679) 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, 48872 + ... + 49451.

It is an arithmetic number, because the mean of its divisors is an integer number (3318435).

Almost surely, 2^28513670 is an apocalyptic number.

28513670 is a deficient number, since it is larger than the sum of its proper divisors (24581290).

28513670 is a wasteful number, since it uses less digits than its factorization.

28513670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98359.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 28513670 is about 5339.8192853317. The cubic root of 28513670 is about 305.5045666005.

The spelling of 28513670 in words is "twenty-eight million, five hundred thirteen thousand, six hundred seventy".