150991320 has 128 divisors (see below), whose sum is σ = 476720640. Its totient is φ = 38184960.

The previous prime is 150991319. The next prime is 150991327. The reversal of 150991320 is 23199051.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150991327) 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, 626400 + ... + 626640.

It is an arithmetic number, because the mean of its divisors is an integer number (3724380).

Almost surely, 2^150991320 is an apocalyptic number.

150991320 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 150991320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238360320).

150991320 is an abundant number, since it is smaller than the sum of its proper divisors (325729320).

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

150991320 is a wasteful number, since it uses less digits than its factorization.

150991320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 150991320 is about 12287.8525381777. The cubic root of 150991320 is about 532.4971985129.

It can be divided in two parts, 1509 and 91320, that added together give a palindrome (92829).

The spelling of 150991320 in words is "one hundred fifty million, nine hundred ninety-one thousand, three hundred twenty".