28010142 has 24 divisors (see below), whose sum is σ = 63883560. Its totient is φ = 8845200.

The previous prime is 28010141. The next prime is 28010149. The reversal of 28010142 is 24101082.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28010141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40609 + ... + 41292.

It is an arithmetic number, because the mean of its divisors is an integer number (2661815).

Almost surely, 2^28010142 is an apocalyptic number.

28010142 is an abundant number, since it is smaller than the sum of its proper divisors (35873418).

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

28010142 is a wasteful number, since it uses less digits than its factorization.

28010142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81928 (or 81925 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 28010142 is about 5292.4608642861. The cubic root of 28010142 is about 303.6955559587.

The spelling of 28010142 in words is "twenty-eight million, ten thousand, one hundred forty-two".