1226520 has 48 divisors (see below), whose sum is σ = 3987360. Its totient is φ = 326976.

The previous prime is 1226503. The next prime is 1226531. The reversal of 1226520 is 256221.

1226520 is a `hidden beast` number, since 12 + 2 + 652 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1226493 and 1226502.

It is a congruent number.

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, 1344 + ... + 2063.

It is an arithmetic number, because the mean of its divisors is an integer number (83070).

2^1226520 is an apocalyptic number.

1226520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1226520 is an abundant number, since it is smaller than the sum of its proper divisors (2760840).

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

1226520 is a wasteful number, since it uses less digits than its factorization.

1226520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424 (or 3417 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1226520 is about 1107.4836341906. The cubic root of 1226520 is about 107.0429850294.

Subtracting from 1226520 its reverse (256221), we obtain a cube (970299 = 99³).

The spelling of 1226520 in words is "one million, two hundred twenty-six thousand, five hundred twenty".