28862736 has 160 divisors (see below), whose sum is σ = 93708288. Its totient is φ = 7464960.

The previous prime is 28862731. The next prime is 28862737. The reversal of 28862736 is 63726882.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28862731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176991 + ... + 177153.

Almost surely, 2^28862736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28862736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46854144).

28862736 is an abundant number, since it is smaller than the sum of its proper divisors (64845552).

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

28862736 is a wasteful number, since it uses less digits than its factorization.

28862736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 223 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 28862736 is about 5372.4050480209. The cubic root of 28862736 is about 306.7461818593.

The spelling of 28862736 in words is "twenty-eight million, eight hundred sixty-two thousand, seven hundred thirty-six".