149447250 has 96 divisors (see below), whose sum is σ = 408066048. Its totient is φ = 39463200.

The previous prime is 149447219. The next prime is 149447251. The reversal of 149447250 is 52744941.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (149447251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 285489 + ... + 286011.

It is an arithmetic number, because the mean of its divisors is an integer number (4250688).

Almost surely, 2^149447250 is an apocalyptic number.

149447250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 149447250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204033024).

149447250 is an abundant number, since it is smaller than the sum of its proper divisors (258618798).

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

149447250 is a wasteful number, since it uses less digits than its factorization.

149447250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 149447250 is about 12224.8619624109. The cubic root of 149447250 is about 530.6758318037.

The spelling of 149447250 in words is "one hundred forty-nine million, four hundred forty-seven thousand, two hundred fifty".