1284920714 has 128 divisors (see below), whose sum is σ = 2691256320. Its totient is φ = 444787200.

The previous prime is 1284920621. The next prime is 1284920717. The reversal of 1284920714 is 4170294821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (1284920717) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4105022 + ... + 4105334.

It is an arithmetic number, because the mean of its divisors is an integer number (21025440).

Almost surely, 2^1284920714 is an apocalyptic number.

1284920714 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1284920714 is an abundant number, since it is smaller than the sum of its proper divisors (1406335606).

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

1284920714 is a wasteful number, since it uses less digits than its factorization.

1284920714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1284920714 is about 35845.7907431263. The cubic root of 1284920714 is about 1087.1566084351.

The spelling of 1284920714 in words is "one billion, two hundred eighty-four million, nine hundred twenty thousand, seven hundred fourteen".