13069820 has 12 divisors (see below), whose sum is σ = 27446664. Its totient is φ = 5227920.

The previous prime is 13069813. The next prime is 13069841. The reversal of 13069820 is 2896031.

13069820 = 552² + 553² + ... + 591².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326726 + ... + 326765.

It is an arithmetic number, because the mean of its divisors is an integer number (2287222).

Almost surely, 2^13069820 is an apocalyptic number.

13069820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13069820 is an abundant number, since it is smaller than the sum of its proper divisors (14376844).

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

13069820 is a wasteful number, since it uses less digits than its factorization.

13069820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653500 (or 653498 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 13069820 is about 3615.2206018444. The cubic root of 13069820 is about 235.5536666054.

The spelling of 13069820 in words is "thirteen million, sixty-nine thousand, eight hundred twenty".