151897320 has 96 divisors (see below), whose sum is σ = 501831720. Its totient is φ = 39836160.

The previous prime is 151897301. The next prime is 151897337. The reversal of 151897320 is 23798151.

It can be written as a sum of positive squares in 4 ways, for example, as 90212004 + 61685316 = 9498^2 + 7854^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18502 + ... + 25418.

Almost surely, 2^151897320 is an apocalyptic number.

151897320 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 151897320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250915860).

151897320 is an abundant number, since it is smaller than the sum of its proper divisors (349934400).

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

151897320 is a wasteful number, since it uses less digits than its factorization.

151897320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6995 (or 6988 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 151897320 is about 12324.6630785592. The cubic root of 151897320 is about 533.5601309722.

The spelling of 151897320 in words is "one hundred fifty-one million, eight hundred ninety-seven thousand, three hundred twenty".