28493870 has 16 divisors (see below), whose sum is σ = 54306288. Its totient is φ = 10727040.

The previous prime is 28493837. The next prime is 28493897. The reversal of 28493870 is 7839482.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83636 + ... + 83975.

It is an arithmetic number, because the mean of its divisors is an integer number (3394143).

Almost surely, 2^28493870 is an apocalyptic number.

28493870 is a deficient number, since it is larger than the sum of its proper divisors (25812418).

28493870 is a wasteful number, since it uses less digits than its factorization.

28493870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167635.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 28493870 is about 5337.9649680379. The cubic root of 28493870 is about 305.4338357182.

The spelling of 28493870 in words is "twenty-eight million, four hundred ninety-three thousand, eight hundred seventy".