28487760 has 160 divisors (see below), whose sum is σ = 104374272. Its totient is φ = 6289920.

The previous prime is 28487741. The next prime is 28487803. The reversal of 28487760 is 6778482.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 51807 + ... + 52353.

Almost surely, 2^28487760 is an apocalyptic number.

28487760 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 28487760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52187136).

28487760 is an abundant number, since it is smaller than the sum of its proper divisors (75886512).

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

28487760 is a wasteful number, since it uses less digits than its factorization.

28487760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 28487760 is about 5337.3926218707. The cubic root of 28487760 is about 305.4120025526.

The spelling of 28487760 in words is "twenty-eight million, four hundred eighty-seven thousand, seven hundred sixty".