128226372 has 24 divisors (see below), whose sum is σ = 299569536. Its totient is φ = 42688608.

The previous prime is 128226367. The next prime is 128226377. The reversal of 128226372 is 273622821.

It is an interprime number because it is at equal distance from previous prime (128226367) and next prime (128226377).

It is not an unprimeable number, because it can be changed into a prime (128226377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3973 + ... + 16499.

It is an arithmetic number, because the mean of its divisors is an integer number (12482064).

Almost surely, 2^128226372 is an apocalyptic number.

128226372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128226372 is an abundant number, since it is smaller than the sum of its proper divisors (171343164).

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

128226372 is a wasteful number, since it uses less digits than its factorization.

128226372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13387 (or 13385 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 128226372 is about 11323.7084031690. The cubic root of 128226372 is about 504.2653396227.

The spelling of 128226372 in words is "one hundred twenty-eight million, two hundred twenty-six thousand, three hundred seventy-two".