122904648 has 32 divisors (see below), whose sum is σ = 341402400. Its totient is φ = 40968144.

The previous prime is 122904643. The next prime is 122904653. The reversal of 122904648 is 846409221.

122904648 is a `hidden beast` number, since 1 + 2 + 2 + 9 + 0 + 4 + 648 = 666.

It is an interprime number because it is at equal distance from previous prime (122904643) and next prime (122904653).

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

It is not an unprimeable number, because it can be changed into a prime (122904641) 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, 284286 + ... + 284717.

It is an arithmetic number, because the mean of its divisors is an integer number (10668825).

Almost surely, 2^122904648 is an apocalyptic number.

122904648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

122904648 is an abundant number, since it is smaller than the sum of its proper divisors (218497752).

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

122904648 is a wasteful number, since it uses less digits than its factorization.

122904648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569018 (or 569008 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 122904648 is about 11086.2368728077. The cubic root of 122904648 is about 497.1904396447.

The spelling of 122904648 in words is "one hundred twenty-two million, nine hundred four thousand, six hundred forty-eight".