1206398256 has 160 divisors (see below), whose sum is σ = 3687383040. Its totient is φ = 332736768.

The previous prime is 1206398213. The next prime is 1206398267. The reversal of 1206398256 is 6528936021.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1247085 + ... + 1248051.

It is an arithmetic number, because the mean of its divisors is an integer number (23046144).

Almost surely, 2^1206398256 is an apocalyptic number.

1206398256 is a gapful number since it is divisible by the number (16) 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 1206398256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1843691520).

1206398256 is an abundant number, since it is smaller than the sum of its proper divisors (2480984784).

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

1206398256 is a wasteful number, since it uses less digits than its factorization.

1206398256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1105 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 1206398256 is about 34733.2442481263. The cubic root of 1206398256 is about 1064.5438783854.

The spelling of 1206398256 in words is "one billion, two hundred six million, three hundred ninety-eight thousand, two hundred fifty-six".