15149420 has 48 divisors (see below), whose sum is σ = 37382688. Its totient is φ = 5084160.

The previous prime is 15149419. The next prime is 15149423. The reversal of 15149420 is 2494151.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 15149420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15149423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212 + ... + 5508.

It is an arithmetic number, because the mean of its divisors is an integer number (778806).

Almost surely, 2^15149420 is an apocalyptic number.

15149420 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 15149420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18691344).

15149420 is an abundant number, since it is smaller than the sum of its proper divisors (22233268).

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

15149420 is a wasteful number, since it uses less digits than its factorization.

15149420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330 (or 5328 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 15149420 is about 3892.2255844183. The cubic root of 15149420 is about 247.4373953141.

The spelling of 15149420 in words is "fifteen million, one hundred forty-nine thousand, four hundred twenty".