28427672 has 64 divisors (see below), whose sum is σ = 69491520. Its totient is φ = 10579968.

The previous prime is 28427671. The next prime is 28427677. The reversal of 28427672 is 27672482.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28427671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11228 + ... + 13524.

It is an arithmetic number, because the mean of its divisors is an integer number (1085805).

Almost surely, 2^28427672 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 28427672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34745760).

28427672 is an abundant number, since it is smaller than the sum of its proper divisors (41063848).

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

28427672 is a wasteful number, since it uses less digits than its factorization.

28427672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340 (or 2336 counting only the distinct ones).

The product of its digits is 75264, while the sum is 38.

The square root of 28427672 is about 5331.7606848020. The cubic root of 28427672 is about 305.1971206257.

The spelling of 28427672 in words is "twenty-eight million, four hundred twenty-seven thousand, six hundred seventy-two".