28697202 has 12 divisors (see below), whose sum is σ = 62177310. Its totient is φ = 9565728.

The previous prime is 28697183. The next prime is 28697209. The reversal of 28697202 is 20279682.

It can be written as a sum of positive squares in only one way, i.e., 26101881 + 2595321 = 5109^2 + 1611^2 .

It is not an unprimeable number, because it can be changed into a prime (28697209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 797127 + ... + 797162.

Almost surely, 2^28697202 is an apocalyptic number.

28697202 is an abundant number, since it is smaller than the sum of its proper divisors (33480108).

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

28697202 is a wasteful number, since it uses less digits than its factorization.

28697202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594297 (or 1594294 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 28697202 is about 5356.9769460023. The cubic root of 28697202 is about 306.1586387479.

It can be divided in two parts, 286 and 97202, that multiplied together give a palindrome (27799772).

The spelling of 28697202 in words is "twenty-eight million, six hundred ninety-seven thousand, two hundred two".