149311800 has 144 divisors (see below), whose sum is σ = 547096680. Its totient is φ = 36192000.

The previous prime is 149311769. The next prime is 149311801. The reversal of 149311800 is 8113941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149311801) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16030 + ... + 23570.

Almost surely, 2^149311800 is an apocalyptic number.

149311800 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 149311800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273548340).

149311800 is an abundant number, since it is smaller than the sum of its proper divisors (397784880).

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

149311800 is a wasteful number, since it uses less digits than its factorization.

149311800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7574 (or 7562 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 149311800 is about 12219.3207667202. The cubic root of 149311800 is about 530.5154591231.

The spelling of 149311800 in words is "one hundred forty-nine million, three hundred eleven thousand, eight hundred".