28153366 has 4 divisors (see below), whose sum is σ = 42230052. Its totient is φ = 14076682.

The previous prime is 28153339. The next prime is 28153373. The reversal of 28153366 is 66335182.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×28153366² = 1585224034259912, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 7038340 + ... + 7038343.

It is an arithmetic number, because the mean of its divisors is an integer number (10557513).

Almost surely, 2^28153366 is an apocalyptic number.

28153366 is a deficient number, since it is larger than the sum of its proper divisors (14076686).

28153366 is a wasteful number, since it uses less digits than its factorization.

28153366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14076685.

The product of its digits is 25920, while the sum is 34.

The square root of 28153366 is about 5305.9745570442. The cubic root of 28153366 is about 304.2123040881.

The spelling of 28153366 in words is "twenty-eight million, one hundred fifty-three thousand, three hundred sixty-six".