28486660 has 24 divisors (see below), whose sum is σ = 60258240. Its totient is φ = 11311584.

The previous prime is 28486657. The next prime is 28486663. The reversal of 28486660 is 6668482.

It is an interprime number because it is at equal distance from previous prime (28486657) and next prime (28486663).

It is a super-2 number, since 2×28486660² = 1622979595911200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28486663) 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, 2344 + ... + 7903.

It is an arithmetic number, because the mean of its divisors is an integer number (2510760).

Almost surely, 2^28486660 is an apocalyptic number.

28486660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28486660 is an abundant number, since it is smaller than the sum of its proper divisors (31771580).

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

28486660 is a wasteful number, since it uses less digits than its factorization.

28486660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10395 (or 10393 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 28486660 is about 5337.2895743064. The cubic root of 28486660 is about 305.4080715366.

The spelling of 28486660 in words is "twenty-eight million, four hundred eighty-six thousand, six hundred sixty".