149047780 has 96 divisors (see below), whose sum is σ = 380217600. Its totient is φ = 47941632.

The previous prime is 149047777. The next prime is 149047781. The reversal of 149047780 is 87740941.

It is a super-3 number, since 3×149047780³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (149047781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 364216 + ... + 364624.

It is an arithmetic number, because the mean of its divisors is an integer number (3960600).

Almost surely, 2^149047780 is an apocalyptic number.

149047780 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 149047780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190108800).

149047780 is an abundant number, since it is smaller than the sum of its proper divisors (231169820).

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

149047780 is a wasteful number, since it uses less digits than its factorization.

149047780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 149047780 is about 12208.5126039170. The cubic root of 149047780 is about 530.2025806809.

The spelling of 149047780 in words is "one hundred forty-nine million, forty-seven thousand, seven hundred eighty".