28751454 has 36 divisors (see below), whose sum is σ = 66186744. Its totient is φ = 9018432.

The previous prime is 28751453. The next prime is 28751483. The reversal of 28751454 is 45415782.

It is a super-2 number, since 2×28751454² = 1653292214228232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28751453) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2439 + ... + 7965.

Almost surely, 2^28751454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28751454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33093372).

28751454 is an abundant number, since it is smaller than the sum of its proper divisors (37435290).

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

28751454 is a wasteful number, since it uses less digits than its factorization.

28751454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5569 (or 5549 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 28751454 is about 5362.0382318667. The cubic root of 28751454 is about 306.3514480511.

The spelling of 28751454 in words is "twenty-eight million, seven hundred fifty-one thousand, four hundred fifty-four".