1206326540 has 48 divisors (see below), whose sum is σ = 2714910912. Its totient is φ = 449070336.

The previous prime is 1206326531. The next prime is 1206326551. The reversal of 1206326540 is 456236021.

It is a super-2 number, since 2×1206326540² = 2910447442216743200, which contains 22 as substring.

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, 18419 + ... + 52458.

It is an arithmetic number, because the mean of its divisors is an integer number (56560644).

Almost surely, 2^1206326540 is an apocalyptic number.

1206326540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1206326540 is an abundant number, since it is smaller than the sum of its proper divisors (1508584372).

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

1206326540 is a wasteful number, since it uses less digits than its factorization.

1206326540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70946 (or 70944 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1206326540 is about 34732.2118500967. The cubic root of 1206326540 is about 1064.5227835434.

The spelling of 1206326540 in words is "one billion, two hundred six million, three hundred twenty-six thousand, five hundred forty".