28153770 has 16 divisors (see below), whose sum is σ = 67569120. Its totient is φ = 7507664.

The previous prime is 28153747. The next prime is 28153787. The reversal of 28153770 is 7735182.

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, 469200 + ... + 469259.

It is an arithmetic number, because the mean of its divisors is an integer number (4223070).

Almost surely, 2^28153770 is an apocalyptic number.

28153770 is an abundant number, since it is smaller than the sum of its proper divisors (39415350).

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

28153770 is a wasteful number, since it uses less digits than its factorization.

28153770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938469.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 28153770 is about 5306.0126271994. The cubic root of 28153770 is about 304.2137592272.

The spelling of 28153770 in words is "twenty-eight million, one hundred fifty-three thousand, seven hundred seventy".