2015136420 has 72 divisors (see below), whose sum is σ = 6201979392. Its totient is φ = 488516160.

The previous prime is 2015136419. The next prime is 2015136433. The reversal of 2015136420 is 246315102.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 131524 + ... + 146043.

Almost surely, 2^2015136420 is an apocalyptic number.

2015136420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2015136420 is an abundant number, since it is smaller than the sum of its proper divisors (4186842972).

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

2015136420 is a wasteful number, since it uses less digits than its factorization.

2015136420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277601 (or 277588 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2015136420 is about 44890.2708835667. The cubic root of 2015136420 is about 1263.0915140793.

The spelling of 2015136420 in words is "two billion, fifteen million, one hundred thirty-six thousand, four hundred twenty".