28430142 has 32 divisors (see below), whose sum is σ = 62085408. Its totient is φ = 8626176.

The previous prime is 28430141. The next prime is 28430147. The reversal of 28430142 is 24103482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28430141) 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, 3198 + ... + 8190.

It is an arithmetic number, because the mean of its divisors is an integer number (1940169).

Almost surely, 2^28430142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28430142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31042704).

28430142 is an abundant number, since it is smaller than the sum of its proper divisors (33655266).

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

28430142 is a wasteful number, since it uses less digits than its factorization.

28430142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 28430142 is about 5331.9923105721. The cubic root of 28430142 is about 305.2059596078.

The spelling of 28430142 in words is "twenty-eight million, four hundred thirty thousand, one hundred forty-two".