28623960 has 96 divisors (see below), whose sum is σ = 97100640. Its totient is φ = 7299072.

The previous prime is 28623949. The next prime is 28623979. The reversal of 28623960 is 6932682.

28623960 is a `hidden beast` number, since 28 + 623 + 9 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6552 + ... + 10008.

It is an arithmetic number, because the mean of its divisors is an integer number (1011465).

Almost surely, 2^28623960 is an apocalyptic number.

28623960 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 28623960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48550320).

28623960 is an abundant number, since it is smaller than the sum of its proper divisors (68476680).

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

28623960 is a wasteful number, since it uses less digits than its factorization.

28623960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497 (or 3490 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 28623960 is about 5350.1364468582. The cubic root of 28623960 is about 305.8979539264.

The spelling of 28623960 in words is "twenty-eight million, six hundred twenty-three thousand, nine hundred sixty".