149889740 has 96 divisors (see below), whose sum is σ = 422682624. Its totient is φ = 43119360.

The previous prime is 149889737. The next prime is 149889763. The reversal of 149889740 is 47988941.

149889740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 16277 + ... + 23763.

It is an arithmetic number, because the mean of its divisors is an integer number (4402944).

Almost surely, 2^149889740 is an apocalyptic number.

149889740 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 149889740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211341312).

149889740 is an abundant number, since it is smaller than the sum of its proper divisors (272792884).

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

149889740 is a wasteful number, since it uses less digits than its factorization.

149889740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7527 (or 7525 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 149889740 is about 12242.9465407638. The cubic root of 149889740 is about 531.1990651974.

The spelling of 149889740 in words is "one hundred forty-nine million, eight hundred eighty-nine thousand, seven hundred forty".