148881780 has 96 divisors (see below), whose sum is σ = 471139200. Its totient is φ = 39020544.

The previous prime is 148881779. The next prime is 148881787. The reversal of 148881780 is 87188841.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148881787) 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, 29524 + ... + 34196.

It is an arithmetic number, because the mean of its divisors is an integer number (4907700).

Almost surely, 2^148881780 is an apocalyptic number.

148881780 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 148881780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235569600).

148881780 is an abundant number, since it is smaller than the sum of its proper divisors (322257420).

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

148881780 is a wasteful number, since it uses less digits than its factorization.

148881780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4750 (or 4742 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 45.

The square root of 148881780 is about 12201.7121749368. The cubic root of 148881780 is about 530.0056721833.

The spelling of 148881780 in words is "one hundred forty-eight million, eight hundred eighty-one thousand, seven hundred eighty".