13633420 has 24 divisors (see below), whose sum is σ = 29036448. Its totient is φ = 5376000.

The previous prime is 13633391. The next prime is 13633421. The reversal of 13633420 is 2433631.

13633420 = T₈₀ + T₈₁ + ... + T₄₃₄.

It is a junction number, because it is equal to n+sod(n) for n = 13633391 and 13633400.

It is not an unprimeable number, because it can be changed into a prime (13633421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3381 + ... + 6220.

It is an arithmetic number, because the mean of its divisors is an integer number (1209852).

Almost surely, 2^13633420 is an apocalyptic number.

13633420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13633420 is an abundant number, since it is smaller than the sum of its proper divisors (15403028).

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

13633420 is a wasteful number, since it uses less digits than its factorization.

13633420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9681 (or 9679 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 13633420 is about 3692.3461376204. The cubic root of 13633420 is about 238.8919990781.

The spelling of 13633420 in words is "thirteen million, six hundred thirty-three thousand, four hundred twenty".