13623420 has 48 divisors (see below), whose sum is σ = 38965248. Its totient is φ = 3554880.

The previous prime is 13623419. The next prime is 13623427. The reversal of 13623420 is 2432631.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13623427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405 + ... + 5235.

It is an arithmetic number, because the mean of its divisors is an integer number (811776).

Almost surely, 2^13623420 is an apocalyptic number.

13623420 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 13623420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19482624).

13623420 is an abundant number, since it is smaller than the sum of its proper divisors (25341828).

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

13623420 is a wasteful number, since it uses less digits than its factorization.

13623420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4890 (or 4888 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 13623420 is about 3690.9917366475. The cubic root of 13623420 is about 238.8335763612.

The spelling of 13623420 in words is "thirteen million, six hundred twenty-three thousand, four hundred twenty".