90947369242728 has 160 divisors (see below), whose sum is σ = 265819171685760. Its totient is φ = 28996968781440.

The previous prime is 90947369242727. The next prime is 90947369242739. The reversal of 90947369242728 is 82724296374909.

90947369242728 is a `hidden beast` number, since 9 + 0 + 9 + 473 + 6 + 92 + 42 + 7 + 28 = 666.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (90947369242727) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1113541333 + ... + 1113623003.

It is an arithmetic number, because the mean of its divisors is an integer number (1661369823036).

Almost surely, 2^{90947369242728} is an apocalyptic number.

It is an amenable number.

90947369242728 is an abundant number, since it is smaller than the sum of its proper divisors (174871802443032).

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

90947369242728 is a wasteful number, since it uses less digits than its factorization.

90947369242728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156429 (or 156416 counting only the distinct ones).

The product of its (nonzero) digits is 658409472, while the sum is 72.

The spelling of 90947369242728 in words is "ninety trillion, nine hundred forty-seven billion, three hundred sixty-nine million, two hundred forty-two thousand, seven hundred twenty-eight".