1236452228720 has 20 divisors (see below), whose sum is σ = 2874751431960. Its totient is φ = 494580891456.

The previous prime is 1236452228717. The next prime is 1236452228741. The reversal of 1236452228720 is 278222546321.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1236452228720² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7727826350 + ... + 7727826509.

It is an arithmetic number, because the mean of its divisors is an integer number (143737571598).

Almost surely, 2^{1236452228720} is an apocalyptic number.

1236452228720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1236452228720 is an abundant number, since it is smaller than the sum of its proper divisors (1638299203240).

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

1236452228720 is a wasteful number, since it uses less digits than its factorization.

1236452228720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15455652872 (or 15455652866 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 44.

The spelling of 1236452228720 in words is "one trillion, two hundred thirty-six billion, four hundred fifty-two million, two hundred twenty-eight thousand, seven hundred twenty".