13046220 has 108 divisors (see below), whose sum is σ = 43570800. Its totient is φ = 3157440.

The previous prime is 13046219. The next prime is 13046233. The reversal of 13046220 is 2264031.

13046220 = T₄₃₁ + T₄₃₂ + ... + T₅₄₀.

It is a happy number.

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 = 13046193 and 13046202.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 21481 + ... + 22079.

Almost surely, 2^13046220 is an apocalyptic number.

13046220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13046220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21785400).

13046220 is an abundant number, since it is smaller than the sum of its proper divisors (30524580).

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

13046220 is a wasteful number, since it uses less digits than its factorization.

13046220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13046220 is about 3611.9551492232. The cubic root of 13046220 is about 235.4118024769.

The spelling of 13046220 in words is "thirteen million, forty-six thousand, two hundred twenty".