28195450 has 24 divisors (see below), whose sum is σ = 52585920. Its totient is φ = 11247600.

The previous prime is 28195439. The next prime is 28195457. The reversal of 28195450 is 5459182.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28195457) 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, 30495 + ... + 31405.

It is an arithmetic number, because the mean of its divisors is an integer number (2191080).

Almost surely, 2^28195450 is an apocalyptic number.

28195450 is a deficient number, since it is larger than the sum of its proper divisors (24390470).

28195450 is a wasteful number, since it uses less digits than its factorization.

28195450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542 (or 1537 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 28195450 is about 5309.9387943742. The cubic root of 28195450 is about 304.3638087288.

The spelling of 28195450 in words is "twenty-eight million, one hundred ninety-five thousand, four hundred fifty".