122646520 has 32 divisors (see below), whose sum is σ = 290480400. Its totient is φ = 46476288.

The previous prime is 122646467. The next prime is 122646521. The reversal of 122646520 is 25646221.

It is a super-2 number, since 2×122646520² = 30084337736220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122646521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79929 + ... + 81448.

Almost surely, 2^122646520 is an apocalyptic number.

122646520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122646520 is an abundant number, since it is smaller than the sum of its proper divisors (167833880).

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

122646520 is a wasteful number, since it uses less digits than its factorization.

122646520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161407 (or 161403 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 122646520 is about 11074.5889314231. The cubic root of 122646520 is about 496.8421242966.

The spelling of 122646520 in words is "one hundred twenty-two million, six hundred forty-six thousand, five hundred twenty".