1628420242734 has 40 divisors (see below), whose sum is σ = 3649725870120. Its totient is φ = 542679068304.

The previous prime is 1628420242699. The next prime is 1628420242759. The reversal of 1628420242734 is 4372420248261.

1628420242734 is a `hidden beast` number, since 16 + 2 + 8 + 4 + 202 + 427 + 3 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1628420242734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 490129 + ... + 1870044.

It is an arithmetic number, because the mean of its divisors is an integer number (91243146753).

Almost surely, 2^{1628420242734} is an apocalyptic number.

1628420242734 is an abundant number, since it is smaller than the sum of its proper divisors (2021305627386).

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

1628420242734 is a wasteful number, since it uses less digits than its factorization.

1628420242734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364446 (or 2364437 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 45.

The spelling of 1628420242734 in words is "one trillion, six hundred twenty-eight billion, four hundred twenty million, two hundred forty-two thousand, seven hundred thirty-four".