28074590 has 16 divisors (see below), whose sum is σ = 53194320. Its totient is φ = 10638720.

The previous prime is 28074589. The next prime is 28074593. The reversal of 28074590 is 9547082.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28074590.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28074593) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 73691 + ... + 74070.

It is an arithmetic number, because the mean of its divisors is an integer number (3324645).

Almost surely, 2^28074590 is an apocalyptic number.

28074590 is a deficient number, since it is larger than the sum of its proper divisors (25119730).

28074590 is a wasteful number, since it uses less digits than its factorization.

28074590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147787.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 28074590 is about 5298.5460269776. The cubic root of 28074590 is about 303.9282999765.

The spelling of 28074590 in words is "twenty-eight million, seventy-four thousand, five hundred ninety".