28215350 has 12 divisors (see below), whose sum is σ = 52480644. Its totient is φ = 11286120.

The previous prime is 28215331. The next prime is 28215389. The reversal of 28215350 is 5351282.

It is a super-2 number, since 2×28215350² = 1592211951245000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282104 + ... + 282203.

It is an arithmetic number, because the mean of its divisors is an integer number (4373387).

Almost surely, 2^28215350 is an apocalyptic number.

28215350 is a deficient number, since it is larger than the sum of its proper divisors (24265294).

28215350 is a wasteful number, since it uses less digits than its factorization.

28215350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564319 (or 564314 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 28215350 is about 5311.8123084311. The cubic root of 28215350 is about 304.4353972937.

The spelling of 28215350 in words is "twenty-eight million, two hundred fifteen thousand, three hundred fifty".