28120150051920 has 400 divisors, whose sum is σ = 98935929480960. Its totient is φ = 7401225581568.

The previous prime is 28120150051883. The next prime is 28120150051921. The reversal of 28120150051920 is 2915005102182.

28120150051920 is a `hidden beast` number, since 2 + 8 + 12 + 0 + 1 + 500 + 51 + 92 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28120150051921) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1820891719 + ... + 1820907161.

Almost surely, 2^{28120150051920} is an apocalyptic number.

28120150051920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28120150051920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49467964740480).

28120150051920 is an abundant number, since it is smaller than the sum of its proper divisors (70815779429040).

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

28120150051920 is a wasteful number, since it uses less digits than its factorization.

28120150051920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19104 (or 19089 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The spelling of 28120150051920 in words is "twenty-eight trillion, one hundred twenty billion, one hundred fifty million, fifty-one thousand, nine hundred twenty".