1428281428506 has 32 divisors (see below), whose sum is σ = 3061036899648. Its totient is φ = 442689634560.

The previous prime is 1428281428501. The next prime is 1428281428517. The reversal of 1428281428506 is 6058241828241.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1428281428501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84345505 + ... + 84362436.

It is an arithmetic number, because the mean of its divisors is an integer number (95657403114).

Almost surely, 2^{1428281428506} is an apocalyptic number.

1428281428506 is an abundant number, since it is smaller than the sum of its proper divisors (1632755471142).

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

1428281428506 is a wasteful number, since it uses less digits than its factorization.

1428281428506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168708046.

The product of its (nonzero) digits is 1966080, while the sum is 51.

The spelling of 1428281428506 in words is "one trillion, four hundred twenty-eight billion, two hundred eighty-one million, four hundred twenty-eight thousand, five hundred six".