28061142 has 16 divisors (see below), whose sum is σ = 56179200. Its totient is φ = 9344232.

The previous prime is 28061123. The next prime is 28061161. The reversal of 28061142 is 24116082.

It is an interprime number because it is at equal distance from previous prime (28061123) and next prime (28061161).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6723 + ... + 10065.

It is an arithmetic number, because the mean of its divisors is an integer number (3511200).

Almost surely, 2^28061142 is an apocalyptic number.

28061142 is an abundant number, since it is smaller than the sum of its proper divisors (28118058).

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

28061142 is a wasteful number, since it uses less digits than its factorization.

28061142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4747.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 28061142 is about 5297.2768475888. The cubic root of 28061142 is about 303.8797640280.

It can be divided in two parts, 28061 and 142, that added together give a triangular number (28203 = T₂₃₇).

The spelling of 28061142 in words is "twenty-eight million, sixty-one thousand, one hundred forty-two".