149447280 has 160 divisors (see below), whose sum is σ = 488540160. Its totient is φ = 37739520.

The previous prime is 149447273. The next prime is 149447303. The reversal of 149447280 is 82744941.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 394131 + ... + 394509.

It is an arithmetic number, because the mean of its divisors is an integer number (3053376).

Almost surely, 2^149447280 is an apocalyptic number.

149447280 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 149447280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244270080).

149447280 is an abundant number, since it is smaller than the sum of its proper divisors (339092880).

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

149447280 is a wasteful number, since it uses less digits than its factorization.

149447280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 149447280 is about 12224.8631894185. The cubic root of 149447280 is about 530.6758673130.

The spelling of 149447280 in words is "one hundred forty-nine million, four hundred forty-seven thousand, two hundred eighty".