28372402 has 8 divisors (see below), whose sum is σ = 42865200. Its totient is φ = 14084004.

The previous prime is 28372397. The next prime is 28372417. The reversal of 28372402 is 20427382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50752 + ... + 51307.

It is an arithmetic number, because the mean of its divisors is an integer number (5358150).

Almost surely, 2^28372402 is an apocalyptic number.

28372402 is a deficient number, since it is larger than the sum of its proper divisors (14492798).

28372402 is a wasteful number, since it uses less digits than its factorization.

28372402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102200.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 28372402 is about 5326.5750722204. The cubic root of 28372402 is about 304.9992009296. Note that the first 3 decimals are identical.

Adding to 28372402 its reverse (20427382), we get a palindrome (48799784).

The spelling of 28372402 in words is "twenty-eight million, three hundred seventy-two thousand, four hundred two".