28923882944890 has 32 divisors (see below), whose sum is σ = 52917144407424. Its totient is φ = 11379745688640.

The previous prime is 28923882944867. The next prime is 28923882944899. The reversal of 28923882944890 is 9844928832982.

It is a super-2 number, since 2×28923882944890² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28923882944899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57643467 + ... + 58143073.

It is an arithmetic number, because the mean of its divisors is an integer number (1653660762732).

Almost surely, 2^{28923882944890} is an apocalyptic number.

28923882944890 is a deficient number, since it is larger than the sum of its proper divisors (23993261462534).

28923882944890 is a wasteful number, since it uses less digits than its factorization.

28923882944890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594582.

The product of its (nonzero) digits is 1146617856, while the sum is 76.

The spelling of 28923882944890 in words is "twenty-eight trillion, nine hundred twenty-three billion, eight hundred eighty-two million, nine hundred forty-four thousand, eight hundred ninety".