28148166320 has 20 divisors (see below), whose sum is σ = 65444486880. Its totient is φ = 11259266496.

The previous prime is 28148166307. The next prime is 28148166329. The reversal of 28148166320 is 2366184182.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (28148166329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175925960 + ... + 175926119.

It is an arithmetic number, because the mean of its divisors is an integer number (3272224344).

Almost surely, 2^28148166320 is an apocalyptic number.

28148166320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28148166320 is an abundant number, since it is smaller than the sum of its proper divisors (37296320560).

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

28148166320 is a wasteful number, since it uses less digits than its factorization.

28148166320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351852092 (or 351852086 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 28148166320 in words is "twenty-eight billion, one hundred forty-eight million, one hundred sixty-six thousand, three hundred twenty".