316742730 has 64 divisors (see below), whose sum is σ = 818864640. Its totient is φ = 78152256.

The previous prime is 316742689. The next prime is 316742731. The reversal of 316742730 is 37247613.

It is a junction number, because it is equal to n+sod(n) for n = 316742691 and 316742700.

It is not an unprimeable number, because it can be changed into a prime (316742731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18049 + ... + 30971.

It is an arithmetic number, because the mean of its divisors is an integer number (12794760).

Almost surely, 2^316742730 is an apocalyptic number.

316742730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 316742730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409432320).

316742730 is an abundant number, since it is smaller than the sum of its proper divisors (502121910).

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

316742730 is a wasteful number, since it uses less digits than its factorization.

316742730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12995.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 316742730 is about 17797.2674868925. The cubic root of 316742730 is about 681.6616872510.

The spelling of 316742730 in words is "three hundred sixteen million, seven hundred forty-two thousand, seven hundred thirty".