13012020 has 144 divisors (see below), whose sum is σ = 47174400. Its totient is φ = 2838528.

The previous prime is 13012019. The next prime is 13012061. The reversal of 13012020 is 2021031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 13011993 and 13012011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28756 + ... + 29204.

It is an arithmetic number, because the mean of its divisors is an integer number (327600).

Almost surely, 2^13012020 is an apocalyptic number.

13012020 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 13012020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23587200).

13012020 is an abundant number, since it is smaller than the sum of its proper divisors (34162380).

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

13012020 is a wasteful number, since it uses less digits than its factorization.

13012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 13012020 is about 3607.2177644273. The cubic root of 13012020 is about 235.2059157890.

Adding to 13012020 its reverse (2021031), we get a palindrome (15033051).

It can be divided in two parts, 1301 and 2020, that added together give a triangular number (3321 = T₈₁).

The spelling of 13012020 in words is "thirteen million, twelve thousand, twenty".