1284695412 has 288 divisors, whose sum is σ = 4269726720. Its totient is φ = 291133440.

The previous prime is 1284695411. The next prime is 1284695417. The reversal of 1284695412 is 2145964821.

It is a super-2 number, since 2×1284695412² = 3300884603227699488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284695411) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2966748 + ... + 2967180.

It is an arithmetic number, because the mean of its divisors is an integer number (14825440).

Almost surely, 2^1284695412 is an apocalyptic number.

1284695412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1284695412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2134863360).

1284695412 is an abundant number, since it is smaller than the sum of its proper divisors (2985031308).

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

1284695412 is a wasteful number, since it uses less digits than its factorization.

1284695412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 488 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 1284695412 is about 35842.6479490564. The cubic root of 1284695412 is about 1087.0930629123.

It can be divided in two parts, 1284 and 695412, that added together give a palindrome (696696).

The spelling of 1284695412 in words is "one billion, two hundred eighty-four million, six hundred ninety-five thousand, four hundred twelve".