28062700 has 18 divisors (see below), whose sum is σ = 60896276. Its totient is φ = 11225040.

The previous prime is 28062667. The next prime is 28062707. The reversal of 28062700 is 726082.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (28062707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140214 + ... + 140413.

Almost surely, 2^28062700 is an apocalyptic number.

28062700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28062700 is an abundant number, since it is smaller than the sum of its proper divisors (32833576).

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

28062700 is a wasteful number, since it uses less digits than its factorization.

28062700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280641 (or 280634 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 28062700 is about 5297.4239022378. The cubic root of 28062700 is about 303.8853878893.

Adding to 28062700 its reverse (726082), we get a palindrome (28788782).

The spelling of 28062700 in words is "twenty-eight million, sixty-two thousand, seven hundred".