15420104 has 48 divisors (see below), whose sum is σ = 33994800. Its totient is φ = 6537888.

The previous prime is 15420103. The next prime is 15420107. The reversal of 15420104 is 40102451.

15420104 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

15420104 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (15420103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54347 + ... + 54629.

It is an arithmetic number, because the mean of its divisors is an integer number (708225).

Almost surely, 2^15420104 is an apocalyptic number.

15420104 is a gapful number since it is divisible by the number (14) 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 15420104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16997400).

15420104 is an abundant number, since it is smaller than the sum of its proper divisors (18574696).

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

15420104 is a wasteful number, since it uses less digits than its factorization.

15420104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 15420104 is about 3926.8440254230. The cubic root of 15420104 is about 248.9024095664.

Adding to 15420104 its reverse (40102451), we get a palindrome (55522555).

The spelling of 15420104 in words is "fifteen million, four hundred twenty thousand, one hundred four".