28524678 has 64 divisors (see below), whose sum is σ = 71124480. Its totient is φ = 7425792.

The previous prime is 28524667. The next prime is 28524689. The reversal of 28524678 is 87642582.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28524667) and next prime (28524689).

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

It is a Curzon number.

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, 48301 + ... + 48887.

It is an arithmetic number, because the mean of its divisors is an integer number (1111320).

Almost surely, 2^28524678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28524678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35562240).

28524678 is an abundant number, since it is smaller than the sum of its proper divisors (42599802).

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

28524678 is a wasteful number, since it uses less digits than its factorization.

28524678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701.

The product of its digits is 215040, while the sum is 42.

The square root of 28524678 is about 5340.8499323610. The cubic root of 28524678 is about 305.5438759515.

The spelling of 28524678 in words is "twenty-eight million, five hundred twenty-four thousand, six hundred seventy-eight".