28232790 has 16 divisors (see below), whose sum is σ = 67758768. Its totient is φ = 7528736.

The previous prime is 28232779. The next prime is 28232791. The reversal of 28232790 is 9723282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28232791) 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, 470517 + ... + 470576.

It is an arithmetic number, because the mean of its divisors is an integer number (4234923).

Almost surely, 2^28232790 is an apocalyptic number.

28232790 is an abundant number, since it is smaller than the sum of its proper divisors (39525978).

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

28232790 is a wasteful number, since it uses less digits than its factorization.

28232790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941103.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 28232790 is about 5313.4536791055. The cubic root of 28232790 is about 304.4981085460.

The spelling of 28232790 in words is "twenty-eight million, two hundred thirty-two thousand, seven hundred ninety".