15696420 has 48 divisors (see below), whose sum is σ = 44307648. Its totient is φ = 4151680.

The previous prime is 15696409. The next prime is 15696433. The reversal of 15696420 is 2469651.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6862 + ... + 8858.

It is an arithmetic number, because the mean of its divisors is an integer number (923076).

Almost surely, 2^15696420 is an apocalyptic number.

15696420 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 15696420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22153824).

15696420 is an abundant number, since it is smaller than the sum of its proper divisors (28611228).

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

15696420 is a wasteful number, since it uses less digits than its factorization.

15696420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140 (or 2138 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 15696420 is about 3961.8707702296. The cubic root of 15696420 is about 250.3803277764.

The spelling of 15696420 in words is "fifteen million, six hundred ninety-six thousand, four hundred twenty".