1206865436 has 48 divisors (see below), whose sum is σ = 2471884800. Its totient is φ = 504828288.

The previous prime is 1206865417. The next prime is 1206865441. The reversal of 1206865436 is 6345686021.

It is a super-2 number, since 2×1206865436² = 2913048361222940192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1206865393 and 1206865402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 576680 + ... + 578768.

It is an arithmetic number, because the mean of its divisors is an integer number (51497600).

Almost surely, 2^1206865436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1206865436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1235942400).

1206865436 is an abundant number, since it is smaller than the sum of its proper divisors (1265019364).

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

1206865436 is a wasteful number, since it uses less digits than its factorization.

1206865436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586 (or 2584 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 1206865436 is about 34739.9688543326. The cubic root of 1206865436 is about 1064.6812761926.

The spelling of 1206865436 in words is "one billion, two hundred six million, eight hundred sixty-five thousand, four hundred thirty-six".