28278060 has 24 divisors (see below), whose sum is σ = 79178736. Its totient is φ = 7540800.

The previous prime is 28278049. The next prime is 28278073. The reversal of 28278060 is 6087282.

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, 235591 + ... + 235710.

It is an arithmetic number, because the mean of its divisors is an integer number (3299114).

Almost surely, 2^28278060 is an apocalyptic number.

28278060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28278060 is an abundant number, since it is smaller than the sum of its proper divisors (50900676).

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

28278060 is a wasteful number, since it uses less digits than its factorization.

28278060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471313 (or 471311 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 28278060 is about 5317.7119139720. The cubic root of 28278060 is about 304.6607712779.

The spelling of 28278060 in words is "twenty-eight million, two hundred seventy-eight thousand, sixty".