28299534 has 16 divisors (see below), whose sum is σ = 58551120. Its totient is φ = 9107840.

The previous prime is 28299533. The next prime is 28299539. The reversal of 28299534 is 43599282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28299533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81147 + ... + 81494.

It is an arithmetic number, because the mean of its divisors is an integer number (3659445).

Almost surely, 2^28299534 is an apocalyptic number.

28299534 is an abundant number, since it is smaller than the sum of its proper divisors (30251586).

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

28299534 is a wasteful number, since it uses less digits than its factorization.

28299534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162675.

The product of its digits is 155520, while the sum is 42.

The square root of 28299534 is about 5319.7306322783. The cubic root of 28299534 is about 304.7378702734.

The spelling of 28299534 in words is "twenty-eight million, two hundred ninety-nine thousand, five hundred thirty-four".