148220640 has 72 divisors (see below), whose sum is σ = 505807848. Its totient is φ = 39525120.

The previous prime is 148220629. The next prime is 148220651. The reversal of 148220640 is 46022841.

148220640 is a `hidden beast` number, since 14 + 8 + 2 + 2 + 0 + 640 = 666.

It is an interprime number because it is at equal distance from previous prime (148220629) and next prime (148220651).

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50026 + ... + 52905.

It is an arithmetic number, because the mean of its divisors is an integer number (7025109).

Almost surely, 2^148220640 is an apocalyptic number.

148220640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

148220640 is an abundant number, since it is smaller than the sum of its proper divisors (357587208).

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

148220640 is a wasteful number, since it uses less digits than its factorization.

148220640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102952 (or 102941 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 148220640 is about 12174.5899314926. The cubic root of 148220640 is about 529.2199751477.

It can be divided in two parts, 1482 and 20640, that added together give a palindrome (22122).

The spelling of 148220640 in words is "one hundred forty-eight million, two hundred twenty thousand, six hundred forty".