1282815420 has 24 divisors (see below), whose sum is σ = 3591883344. Its totient is φ = 342084096.

The previous prime is 1282815407. The next prime is 1282815449. The reversal of 1282815420 is 245182821.

It is a super-3 number, since 3×1282815420³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10690069 + ... + 10690188.

It is an arithmetic number, because the mean of its divisors is an integer number (149661806).

Almost surely, 2^1282815420 is an apocalyptic number.

1282815420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1282815420 is an abundant number, since it is smaller than the sum of its proper divisors (2309067924).

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

1282815420 is a wasteful number, since it uses less digits than its factorization.

1282815420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21380269 (or 21380267 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 1282815420 is about 35816.4127181939. The cubic root of 1282815420 is about 1086.5625288607.

The spelling of 1282815420 in words is "one billion, two hundred eighty-two million, eight hundred fifteen thousand, four hundred twenty".