151138722 has 64 divisors (see below), whose sum is σ = 360391680. Its totient is φ = 41356224.

The previous prime is 151138703. The next prime is 151138777. The reversal of 151138722 is 227831151.

It is a self number, because there is not a number n which added to its sum of digits gives 151138722.

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, 94929 + ... + 96507.

It is an arithmetic number, because the mean of its divisors is an integer number (5631120).

Almost surely, 2^151138722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 151138722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180195840).

151138722 is an abundant number, since it is smaller than the sum of its proper divisors (209252958).

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

151138722 is a wasteful number, since it uses less digits than its factorization.

151138722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687.

The product of its digits is 3360, while the sum is 30.

The square root of 151138722 is about 12293.8489497797. The cubic root of 151138722 is about 532.6704217687.

Adding to 151138722 its reverse (227831151), we get a palindrome (378969873).

The spelling of 151138722 in words is "one hundred fifty-one million, one hundred thirty-eight thousand, seven hundred twenty-two".