151422720 has 144 divisors (see below), whose sum is σ = 494484480. Its totient is φ = 39473152.

The previous prime is 151422709. The next prime is 151422721. The reversal of 151422720 is 27224151.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151422721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180061 + ... + 180899.

It is an arithmetic number, because the mean of its divisors is an integer number (3433920).

Almost surely, 2^151422720 is an apocalyptic number.

151422720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 151422720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247242240).

151422720 is an abundant number, since it is smaller than the sum of its proper divisors (343061760).

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

151422720 is an equidigital number, since it uses as much as digits as its factorization.

151422720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 896 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 151422720 is about 12305.3939392447. The cubic root of 151422720 is about 533.0038520514.

Adding to 151422720 its reverse (27224151), we get a palindrome (178646871).

The spelling of 151422720 in words is "one hundred fifty-one million, four hundred twenty-two thousand, seven hundred twenty".