28269330 has 16 divisors (see below), whose sum is σ = 67846464. Its totient is φ = 7538480.

The previous prime is 28269313. The next prime is 28269379. The reversal of 28269330 is 3396282.

It is a junction number, because it is equal to n+sod(n) for n = 28269291 and 28269300.

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, 471126 + ... + 471185.

It is an arithmetic number, because the mean of its divisors is an integer number (4240404).

Almost surely, 2^28269330 is an apocalyptic number.

28269330 is an abundant number, since it is smaller than the sum of its proper divisors (39577134).

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

28269330 is a wasteful number, since it uses less digits than its factorization.

28269330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942321.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 28269330 is about 5316.8910088509. The cubic root of 28269330 is about 304.6294164363.

The spelling of 28269330 in words is "twenty-eight million, two hundred sixty-nine thousand, three hundred thirty".