13963428 has 60 divisors (see below), whose sum is σ = 37078272. Its totient is φ = 4581360.

The previous prime is 13963387. The next prime is 13963429. The reversal of 13963428 is 82436931.

13963428 is a `hidden beast` number, since 13 + 9 + 634 + 2 + 8 = 666.

It is a super-2 number, since 2×13963428² = 389954643022368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13963392 and 13963401.

It is not an unprimeable number, because it can be changed into a prime (13963429) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22701 + ... + 23307.

Almost surely, 2^13963428 is an apocalyptic number.

13963428 is a gapful number since it is divisible by the number (18) 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 13963428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18539136).

13963428 is an abundant number, since it is smaller than the sum of its proper divisors (23114844).

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

13963428 is a wasteful number, since it uses less digits than its factorization.

13963428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 683 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 13963428 is about 3736.7670518779. The cubic root of 13963428 is about 240.8041774017.

The spelling of 13963428 in words is "thirteen million, nine hundred sixty-three thousand, four hundred twenty-eight".