15420004 has 24 divisors (see below), whose sum is σ = 27659520. Its totient is φ = 7519584.

The previous prime is 15419939. The next prime is 15420011. The reversal of 15420004 is 40002451.

15420004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 15420004.

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, 52482 + ... + 52774.

It is an arithmetic number, because the mean of its divisors is an integer number (1152480).

Almost surely, 2^15420004 is an apocalyptic number.

It is an amenable number.

15420004 is a deficient number, since it is larger than the sum of its proper divisors (12239516).

15420004 is a wasteful number, since it uses less digits than its factorization.

15420004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 15420004 is about 3926.8312925309. The cubic root of 15420004 is about 248.9018715178.

Adding to 15420004 its reverse (40002451), we get a palindrome (55422455).

The spelling of 15420004 in words is "fifteen million, four hundred twenty thousand, four".