15414420 has 120 divisors (see below), whose sum is σ = 50821344. Its totient is φ = 3490368.

The previous prime is 15414419. The next prime is 15414433. The reversal of 15414420 is 2441451.

It is a happy number.

15414420 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 144007 + ... + 144113.

Almost surely, 2^15414420 is an apocalyptic number.

15414420 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 15414420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25410672).

15414420 is an abundant number, since it is smaller than the sum of its proper divisors (35406924).

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

15414420 is a wasteful number, since it uses less digits than its factorization.

15414420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 15414420 is about 3926.1202223060. The cubic root of 15414420 is about 248.8718231933.

Adding to 15414420 its reverse (2441451), we get a palindrome (17855871).

The spelling of 15414420 in words is "fifteen million, four hundred fourteen thousand, four hundred twenty".