122647490 has 24 divisors (see below), whose sum is σ = 256809852. Its totient is φ = 42050400.

The previous prime is 122647463. The next prime is 122647513. The reversal of 122647490 is 94746221.

It can be written as a sum of positive squares in 2 ways, for example, as 120934009 + 1713481 = 10997^2 + 1309^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122647490.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124661 + ... + 125640.

Almost surely, 2^122647490 is an apocalyptic number.

122647490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122647490 is an abundant number, since it is smaller than the sum of its proper divisors (134162362).

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

122647490 is a wasteful number, since it uses less digits than its factorization.

122647490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250322 (or 250315 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 122647490 is about 11074.6327252871. The cubic root of 122647490 is about 496.8434341193.

The spelling of 122647490 in words is "one hundred twenty-two million, six hundred forty-seven thousand, four hundred ninety".