28572202 has 4 divisors (see below), whose sum is σ = 42858306. Its totient is φ = 14286100.

The previous prime is 28572191. The next prime is 28572239. The reversal of 28572202 is 20227582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20227582 = 2 ⋅10113791.

It can be written as a sum of positive squares in only one way, i.e., 23824161 + 4748041 = 4881^2 + 2179^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7143049 + ... + 7143052.

Almost surely, 2^28572202 is an apocalyptic number.

28572202 is a deficient number, since it is larger than the sum of its proper divisors (14286104).

28572202 is a wasteful number, since it uses less digits than its factorization.

28572202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14286103.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 28572202 is about 5345.2971853771. The cubic root of 28572202 is about 305.7134672376.

Adding to 28572202 its reverse (20227582), we get a palindrome (48799784).

The spelling of 28572202 in words is "twenty-eight million, five hundred seventy-two thousand, two hundred two".