151722440 has 16 divisors (see below), whose sum is σ = 341375580. Its totient is φ = 60688960.

The previous prime is 151722419. The next prime is 151722449. The reversal of 151722440 is 44227151.

It can be written as a sum of positive squares in 2 ways, for example, as 151240804 + 481636 = 12298^2 + 694^2 .

It is not an unprimeable number, because it can be changed into a prime (151722449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1896491 + ... + 1896570.

Almost surely, 2^151722440 is an apocalyptic number.

151722440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151722440 is an abundant number, since it is smaller than the sum of its proper divisors (189653140).

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

151722440 is a wasteful number, since it uses less digits than its factorization.

151722440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793072 (or 3793068 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 151722440 is about 12317.5663180679. The cubic root of 151722440 is about 533.3552890267.

Adding to 151722440 its reverse (44227151), we get a palindrome (195949591).

The spelling of 151722440 in words is "one hundred fifty-one million, seven hundred twenty-two thousand, four hundred forty".