148209520 has 40 divisors (see below), whose sum is σ = 346897440. Its totient is φ = 58886400.

The previous prime is 148209499. The next prime is 148209527. The reversal of 148209520 is 25902841.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148209527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5946 + ... + 18214.

It is an arithmetic number, because the mean of its divisors is an integer number (8672436).

Almost surely, 2^148209520 is an apocalyptic number.

148209520 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 148209520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173448720).

148209520 is an abundant number, since it is smaller than the sum of its proper divisors (198687920).

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

148209520 is a wasteful number, since it uses less digits than its factorization.

148209520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12433 (or 12427 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 148209520 is about 12174.1332340335. The cubic root of 148209520 is about 529.2067402089.

The spelling of 148209520 in words is "one hundred forty-eight million, two hundred nine thousand, five hundred twenty".