28709239458000 has 160 divisors (see below), whose sum is σ = 93377692766592. Its totient is φ = 7588046592000.

The previous prime is 28709239457959. The next prime is 28709239458001. The reversal of 28709239458000 is 85493290782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28709239458001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20494006 + ... + 21850005.

Almost surely, 2^{28709239458000} is an apocalyptic number.

28709239458000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28709239458000 is an abundant number, since it is smaller than the sum of its proper divisors (64668453308592).

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

28709239458000 is a wasteful number, since it uses less digits than its factorization.

28709239458000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42344150 (or 42344134 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 28709239458000 in words is "twenty-eight trillion, seven hundred nine billion, two hundred thirty-nine million, four hundred fifty-eight thousand".