15129420 has 24 divisors (see below), whose sum is σ = 42362544. Its totient is φ = 4034496.

The previous prime is 15129419. The next prime is 15129431. The reversal of 15129420 is 2492151.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126019 + ... + 126138.

It is an arithmetic number, because the mean of its divisors is an integer number (1765106).

Almost surely, 2^15129420 is an apocalyptic number.

15129420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15129420 is an abundant number, since it is smaller than the sum of its proper divisors (27233124).

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

15129420 is a wasteful number, since it uses less digits than its factorization.

15129420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252169 (or 252167 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 15129420 is about 3889.6555117388. The cubic root of 15129420 is about 247.3284598509.

The spelling of 15129420 in words is "fifteen million, one hundred twenty-nine thousand, four hundred twenty".