28261960 has 32 divisors (see below), whose sum is σ = 63763200. Its totient is φ = 11273920.

The previous prime is 28261951. The next prime is 28261967. The reversal of 28261960 is 6916282.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28261967) 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, 18921 + ... + 20359.

It is an arithmetic number, because the mean of its divisors is an integer number (1992600).

Almost surely, 2^28261960 is an apocalyptic number.

28261960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28261960 is an abundant number, since it is smaller than the sum of its proper divisors (35501240).

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

28261960 is a wasteful number, since it uses less digits than its factorization.

28261960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941 (or 1937 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 28261960 is about 5316.1978894695. The cubic root of 28261960 is about 304.6029411722.

The spelling of 28261960 in words is "twenty-eight million, two hundred sixty-one thousand, nine hundred sixty".