1728834534 has 24 divisors (see below), whose sum is σ = 4280923920. Its totient is φ = 493952688.

The previous prime is 1728834493. The next prime is 1728834551. The reversal of 1728834534 is 4354388271.

1728834534 is a `hidden beast` number, since 1 + 7 + 2 + 88 + 34 + 534 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1728834534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6860329 + ... + 6860580.

It is an arithmetic number, because the mean of its divisors is an integer number (178371830).

Almost surely, 2^1728834534 is an apocalyptic number.

1728834534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1728834534 is an abundant number, since it is smaller than the sum of its proper divisors (2552089386).

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

1728834534 is a wasteful number, since it uses less digits than its factorization.

1728834534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13720924 (or 13720921 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 1728834534 is about 41579.2560539507. The cubic root of 1728834534 is about 1200.1931480765.

It can be divided in two parts, 172 and 8834534, that added together give a triangular number (8834706 = T₄₂₀₃).

The spelling of 1728834534 in words is "one billion, seven hundred twenty-eight million, eight hundred thirty-four thousand, five hundred thirty-four".