149233644 has 96 divisors (see below), whose sum is σ = 446476800. Its totient is φ = 42223680.

The previous prime is 149233639. The next prime is 149233673. The reversal of 149233644 is 446332941.

It is a happy number.

149233644 is a `hidden beast` number, since 1 + 4 + 9 + 2 + 3 + 3 + 644 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 149233599 and 149233608.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81499 + ... + 83309.

It is an arithmetic number, because the mean of its divisors is an integer number (4650800).

Almost surely, 2^149233644 is an apocalyptic number.

149233644 is a gapful number since it is divisible by the number (14) 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 149233644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223238400).

149233644 is an abundant number, since it is smaller than the sum of its proper divisors (297243156).

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

149233644 is a wasteful number, since it uses less digits than its factorization.

149233644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940 (or 1932 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 149233644 is about 12216.1222980126. The cubic root of 149233644 is about 530.4228783563.

The spelling of 149233644 in words is "one hundred forty-nine million, two hundred thirty-three thousand, six hundred forty-four".