149613220 has 48 divisors (see below), whose sum is σ = 337800960. Its totient is φ = 55482624.

The previous prime is 149613197. The next prime is 149613221. The reversal of 149613220 is 22316941.

149613220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (149613221) 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, 13672 + ... + 22048.

It is an arithmetic number, because the mean of its divisors is an integer number (7037520).

Almost surely, 2^149613220 is an apocalyptic number.

149613220 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 149613220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168900480).

149613220 is an abundant number, since it is smaller than the sum of its proper divisors (188187740).

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

149613220 is a wasteful number, since it uses less digits than its factorization.

149613220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8452 (or 8450 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 149613220 is about 12231.6482944859. The cubic root of 149613220 is about 530.8722080798.

It can be divided in two parts, 14961 and 3220, that added together give a palindrome (18181).

The spelling of 149613220 in words is "one hundred forty-nine million, six hundred thirteen thousand, two hundred twenty".