1200653256 has 128 divisors (see below), whose sum is σ = 3399096960. Its totient is φ = 350208000.

The previous prime is 1200653243. The next prime is 1200653287. The reversal of 1200653256 is 6523560021.

It is a super-2 number, since 2×1200653256² = 2883136482286803072, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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, 985960 + ... + 987176.

It is an arithmetic number, because the mean of its divisors is an integer number (26555445).

Almost surely, 2^1200653256 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 1200653256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1699548480).

1200653256 is an abundant number, since it is smaller than the sum of its proper divisors (2198443704).

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

1200653256 is a wasteful number, since it uses less digits than its factorization.

1200653256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375 (or 1371 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1200653256 is about 34650.4438066816. The cubic root of 1200653256 is about 1062.8513642262.

It can be divided in two parts, 120065 and 3256, that added together give a palindrome (123321).

The spelling of 1200653256 in words is "one billion, two hundred million, six hundred fifty-three thousand, two hundred fifty-six".