28741560 has 128 divisors (see below), whose sum is σ = 93026880. Its totient is φ = 7077888.

The previous prime is 28741541. The next prime is 28741579. The reversal of 28741560 is 6514782.

28741560 is nontrivially palindromic in base 9.

It is an interprime number because it is at equal distance from previous prime (28741541) and next prime (28741579).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148824 + ... + 149016.

Almost surely, 2^28741560 is an apocalyptic number.

28741560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28741560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46513440).

28741560 is an abundant number, since it is smaller than the sum of its proper divisors (64285320).

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

28741560 is a wasteful number, since it uses less digits than its factorization.

28741560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 28741560 is about 5361.1155555537. The cubic root of 28741560 is about 306.3163032897.

The spelling of 28741560 in words is "twenty-eight million, seven hundred forty-one thousand, five hundred sixty".