28730992426 has 32 divisors (see below), whose sum is σ = 45809252352. Its totient is φ = 13467928320.

The previous prime is 28730992369. The next prime is 28730992429. The reversal of 28730992426 is 62429903782.

It is not an unprimeable number, because it can be changed into a prime (28730992429) 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 15 ways as a sum of consecutive naturals, for example, 19530871 + ... + 19532341.

It is an arithmetic number, because the mean of its divisors is an integer number (1431539136).

Almost surely, 2^28730992426 is an apocalyptic number.

28730992426 is a deficient number, since it is larger than the sum of its proper divisors (17078259926).

28730992426 is a wasteful number, since it uses less digits than its factorization.

28730992426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 28730992426 in words is "twenty-eight billion, seven hundred thirty million, nine hundred ninety-two thousand, four hundred twenty-six".