7148381220 has 60 divisors (see below), whose sum is σ = 22424741724. Its totient is φ = 1906234560.

The previous prime is 7148381159. The next prime is 7148381231. The reversal of 7148381220 is 221838417.

It can be written as a sum of positive squares in 2 ways, for example, as 867184704 + 6281196516 = 29448^2 + 79254^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 19 ways as a sum of consecutive naturals, for example, 2204671 + ... + 2207910.

Almost surely, 2^7148381220 is an apocalyptic number.

It is an amenable number.

7148381220 is an abundant number, since it is smaller than the sum of its proper divisors (15276360504).

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

7148381220 is a wasteful number, since it uses less digits than its factorization.

7148381220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4412602 (or 4412591 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 7148381220 is about 84548.1000377891. The cubic root of 7148381220 is about 1926.3531247591.

The spelling of 7148381220 in words is "seven billion, one hundred forty-eight million, three hundred eighty-one thousand, two hundred twenty".