15040420 has 24 divisors (see below), whose sum is σ = 31752000. Its totient is φ = 5984352.

The previous prime is 15040391. The next prime is 15040429. The reversal of 15040420 is 2404051.

It is a junction number, because it is equal to n+sod(n) for n = 15040394 and 15040403.

It is not an unprimeable number, because it can be changed into a prime (15040429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2091 + ... + 5869.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^15040420 is an apocalyptic number.

15040420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15040420 is an abundant number, since it is smaller than the sum of its proper divisors (16711580).

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

15040420 is a wasteful number, since it uses less digits than its factorization.

15040420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987 (or 3985 counting only the distinct ones).

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

The square root of 15040420 is about 3878.1980351705. The cubic root of 15040420 is about 246.8425294046.

Adding to 15040420 its reverse (2404051), we get a palindrome (17444471).

The spelling of 15040420 in words is "fifteen million, forty thousand, four hundred twenty".