148720640 has 88 divisors (see below), whose sum is σ = 368656512. Its totient is φ = 57507840.

The previous prime is 148720633. The next prime is 148720667. The reversal of 148720640 is 46027841.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 148720597 and 148720606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158252 + ... + 159188.

Almost surely, 2^148720640 is an apocalyptic number.

148720640 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 148720640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184328256).

148720640 is an abundant number, since it is smaller than the sum of its proper divisors (219935872).

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

148720640 is an equidigital number, since it uses as much as digits as its factorization.

148720640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 975 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 148720640 is about 12195.1072156009. The cubic root of 148720640 is about 529.8143885467.

The spelling of 148720640 in words is "one hundred forty-eight million, seven hundred twenty thousand, six hundred forty".