1284552420 has 24 divisors (see below), whose sum is σ = 3596746944. Its totient is φ = 342547296.

The previous prime is 1284552389. The next prime is 1284552431. The reversal of 1284552420 is 242554821.

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, 10704544 + ... + 10704663.

It is an arithmetic number, because the mean of its divisors is an integer number (149864456).

Almost surely, 2^1284552420 is an apocalyptic number.

1284552420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1284552420 is an abundant number, since it is smaller than the sum of its proper divisors (2312194524).

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

1284552420 is a wasteful number, since it uses less digits than its factorization.

1284552420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21409219 (or 21409217 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 33.

The square root of 1284552420 is about 35840.6531748516. The cubic root of 1284552420 is about 1087.0527287398.

It can be divided in two parts, 1284 and 552420, that multiplied together give a triangular number (709307280 = T₃₇₆₆₄).

The spelling of 1284552420 in words is "one billion, two hundred eighty-four million, five hundred fifty-two thousand, four hundred twenty".