149987244 has 72 divisors (see below), whose sum is σ = 392137200. Its totient is φ = 44570240.

The previous prime is 149987239. The next prime is 149987249. The reversal of 149987244 is 442789941.

It is an interprime number because it is at equal distance from previous prime (149987239) and next prime (149987249).

It is a junction number, because it is equal to n+sod(n) for n = 149987193 and 149987202.

It is not an unprimeable number, because it can be changed into a prime (149987249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75982 + ... + 77930.

It is an arithmetic number, because the mean of its divisors is an integer number (5446350).

Almost surely, 2^149987244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149987244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196068600).

149987244 is an abundant number, since it is smaller than the sum of its proper divisors (242149956).

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

149987244 is a wasteful number, since it uses less digits than its factorization.

149987244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031 (or 2018 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 149987244 is about 12246.9279413247. The cubic root of 149987244 is about 531.3142227502.

The spelling of 149987244 in words is "one hundred forty-nine million, nine hundred eighty-seven thousand, two hundred forty-four".