28867650 has 96 divisors (see below), whose sum is σ = 86184960. Its totient is φ = 6246720.

The previous prime is 28867633. The next prime is 28867651. The reversal of 28867650 is 5676882.

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

It is not an unprimeable number, because it can be changed into a prime (28867651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19227 + ... + 20673.

It is an arithmetic number, because the mean of its divisors is an integer number (897760).

Almost surely, 2^28867650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28867650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43092480).

28867650 is an abundant number, since it is smaller than the sum of its proper divisors (57317310).

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

28867650 is a wasteful number, since it uses less digits than its factorization.

28867650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 28867650 is about 5372.8623656297. The cubic root of 28867650 is about 306.7635891395.

The spelling of 28867650 in words is "twenty-eight million, eight hundred sixty-seven thousand, six hundred fifty".