28212354 has 32 divisors (see below), whose sum is σ = 63042240. Its totient is φ = 9351936.

The previous prime is 28212341. The next prime is 28212403. The reversal of 28212354 is 45321282.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9069 + ... + 11775.

It is an arithmetic number, because the mean of its divisors is an integer number (1970070).

Almost surely, 2^28212354 is an apocalyptic number.

28212354 is an abundant number, since it is smaller than the sum of its proper divisors (34829886).

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

28212354 is a wasteful number, since it uses less digits than its factorization.

28212354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911 (or 2905 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 28212354 is about 5311.5302879679. The cubic root of 28212354 is about 304.4246215902.

The spelling of 28212354 in words is "twenty-eight million, two hundred twelve thousand, three hundred fifty-four".