128473622 has 4 divisors (see below), whose sum is σ = 192710436. Its totient is φ = 64236810.

The previous prime is 128473603. The next prime is 128473661. The reversal of 128473622 is 226374821.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 32118404 + ... + 32118407.

It is an arithmetic number, because the mean of its divisors is an integer number (48177609).

Almost surely, 2^128473622 is an apocalyptic number.

128473622 is a deficient number, since it is larger than the sum of its proper divisors (64236814).

128473622 is an equidigital number, since it uses as much as digits as its factorization.

128473622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64236813.

The product of its digits is 32256, while the sum is 35.

The square root of 128473622 is about 11334.6205053367. The cubic root of 128473622 is about 504.5892447914.

The spelling of 128473622 in words is "one hundred twenty-eight million, four hundred seventy-three thousand, six hundred twenty-two".