15420246 has 16 divisors (see below), whose sum is σ = 30879408. Its totient is φ = 5133600.

The previous prime is 15420221. The next prime is 15420253. The reversal of 15420246 is 64202451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7356 + ... + 9216.

It is an arithmetic number, because the mean of its divisors is an integer number (1929963).

Almost surely, 2^15420246 is an apocalyptic number.

15420246 is an abundant number, since it is smaller than the sum of its proper divisors (15459162).

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

15420246 is a wasteful number, since it uses less digits than its factorization.

15420246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3247.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 15420246 is about 3926.8621060587. The cubic root of 15420246 is about 248.9031735914.

Adding to 15420246 its reverse (64202451), we get a palindrome (79622697).

The spelling of 15420246 in words is "fifteen million, four hundred twenty thousand, two hundred forty-six".