1206885140 has 12 divisors (see below), whose sum is σ = 2534458836. Its totient is φ = 482754048.

The previous prime is 1206885139. The next prime is 1206885217. The reversal of 1206885140 is 415886021.

It can be written as a sum of positive squares in 2 ways, for example, as 898320784 + 308564356 = 29972^2 + 17566^2 .

It is a super-3 number, since 3×1206885140³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1206885140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30172109 + ... + 30172148.

It is an arithmetic number, because the mean of its divisors is an integer number (211204903).

Almost surely, 2^1206885140 is an apocalyptic number.

1206885140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1206885140 is an abundant number, since it is smaller than the sum of its proper divisors (1327573696).

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

1206885140 is a wasteful number, since it uses less digits than its factorization.

1206885140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60344266 (or 60344264 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 1206885140 is about 34740.2524458300. The cubic root of 1206885140 is about 1064.6870703668.

The spelling of 1206885140 in words is "one billion, two hundred six million, eight hundred eighty-five thousand, one hundred forty".