28900242 has 48 divisors (see below), whose sum is σ = 71877312. Its totient is φ = 8220960.

The previous prime is 28900231. The next prime is 28900271. The reversal of 28900242 is 24200982.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43392 + ... + 44052.

It is an arithmetic number, because the mean of its divisors is an integer number (1497444).

Almost surely, 2^28900242 is an apocalyptic number.

28900242 is an abundant number, since it is smaller than the sum of its proper divisors (42977070).

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

28900242 is a wasteful number, since it uses less digits than its factorization.

28900242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 28900242 is about 5375.8945302154. The cubic root of 28900242 is about 306.8789925826.

The spelling of 28900242 in words is "twenty-eight million, nine hundred thousand, two hundred forty-two".