28154650 has 24 divisors (see below), whose sum is σ = 54176220. Its totient is φ = 10872960.

The previous prime is 28154641. The next prime is 28154657. The reversal of 28154650 is 5645182.

It can be written as a sum of positive squares in 6 ways, for example, as 2277081 + 25877569 = 1509^2 + 5087^2 .

It is not an unprimeable number, because it can be changed into a prime (28154657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8259 + ... + 11158.

Almost surely, 2^28154650 is an apocalyptic number.

28154650 is a deficient number, since it is larger than the sum of its proper divisors (26021570).

28154650 is a wasteful number, since it uses less digits than its factorization.

28154650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19458 (or 19453 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 28154650 is about 5306.0955513447. The cubic root of 28154650 is about 304.2169287887.

The spelling of 28154650 in words is "twenty-eight million, one hundred fifty-four thousand, six hundred fifty".