727138734 has 64 divisors (see below), whose sum is σ = 1708992000. Its totient is φ = 206157504.

The previous prime is 727138703. The next prime is 727138757. The reversal of 727138734 is 437831727.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 280657 + ... + 283235.

It is an arithmetic number, because the mean of its divisors is an integer number (26703000).

Almost surely, 2^727138734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 727138734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (854496000).

727138734 is an abundant number, since it is smaller than the sum of its proper divisors (981853266).

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

727138734 is a wasteful number, since it uses less digits than its factorization.

727138734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742 (or 2728 counting only the distinct ones).

The product of its digits is 197568, while the sum is 42.

The square root of 727138734 is about 26965.5100823255. The cubic root of 727138734 is about 899.2333941161.

The spelling of 727138734 in words is "seven hundred twenty-seven million, one hundred thirty-eight thousand, seven hundred thirty-four".