1200006521928 has 48 divisors (see below), whose sum is σ = 3305102720400. Its totient is φ = 393222474720.

The previous prime is 1200006521921. The next prime is 1200006521933. The reversal of 1200006521928 is 8291256000021.

1200006521928 is a `hidden beast` number, since 120 + 0 + 0 + 0 + 6 + 521 + 9 + 2 + 8 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1200006521892 and 1200006521901.

It is not an unprimeable number, because it can be changed into a prime (1200006521921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141239458 + ... + 141247953.

It is an arithmetic number, because the mean of its divisors is an integer number (68856306675).

Almost surely, 2^{1200006521928} is an apocalyptic number.

1200006521928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1200006521928 is an abundant number, since it is smaller than the sum of its proper divisors (2105096198472).

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

1200006521928 is a wasteful number, since it uses less digits than its factorization.

1200006521928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282487482 (or 282487475 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 1200006521928 in words is "one trillion, two hundred billion, six million, five hundred twenty-one thousand, nine hundred twenty-eight".