15420044 has 12 divisors (see below), whose sum is σ = 27017424. Its totient is φ = 7700784.

The previous prime is 15420043. The next prime is 15420047. The reversal of 15420044 is 44002451.

15420044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 15419998 and 15420025.

It is not an unprimeable number, because it can be changed into a prime (15420043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2609 + ... + 6135.

It is an arithmetic number, because the mean of its divisors is an integer number (2251452).

Almost surely, 2^15420044 is an apocalyptic number.

It is an amenable number.

15420044 is a deficient number, since it is larger than the sum of its proper divisors (11597380).

15420044 is a wasteful number, since it uses less digits than its factorization.

15420044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624 (or 4622 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 15420044 is about 3926.8363856927. The cubic root of 15420044 is about 248.9020867375.

Adding to 15420044 its reverse (44002451), we get a palindrome (59422495).

The spelling of 15420044 in words is "fifteen million, four hundred twenty thousand, forty-four".