28731954 has 16 divisors (see below), whose sum is σ = 57562560. Its totient is φ = 9560880.

The previous prime is 28731949. The next prime is 28731973. The reversal of 28731954 is 45913782.

It is a Curzon number.

It is an unprimeable number.

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, 9 + ... + 7580.

It is an arithmetic number, because the mean of its divisors is an integer number (3597660).

Almost surely, 2^28731954 is an apocalyptic number.

28731954 is an abundant number, since it is smaller than the sum of its proper divisors (28830606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28731954 is a wasteful number, since it uses less digits than its factorization.

28731954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8225.

The product of its digits is 60480, while the sum is 39.

The square root of 28731954 is about 5360.2195850543. The cubic root of 28731954 is about 306.2821738237.

The spelling of 28731954 in words is "twenty-eight million, seven hundred thirty-one thousand, nine hundred fifty-four".