1284772406 has 16 divisors (see below), whose sum is σ = 1981088928. Its totient is φ = 624657600.

The previous prime is 1284772403. The next prime is 1284772409. The reversal of 1284772406 is 6042774821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1284772403) and next prime (1284772409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284772403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51605 + ... + 72336.

It is an arithmetic number, because the mean of its divisors is an integer number (123818058).

Almost surely, 2^1284772406 is an apocalyptic number.

1284772406 is a deficient number, since it is larger than the sum of its proper divisors (696316522).

1284772406 is a wasteful number, since it uses less digits than its factorization.

1284772406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124087.

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 1284772406 is about 35843.7219886551. The cubic root of 1284772406 is about 1087.1147795959.

The spelling of 1284772406 in words is "one billion, two hundred eighty-four million, seven hundred seventy-two thousand, four hundred six".