1236490572 has 12 divisors (see below), whose sum is σ = 2885144696. Its totient is φ = 412163520.

The previous prime is 1236490559. The next prime is 1236490573. The reversal of 1236490572 is 2750946321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1236490572.

It is not an unprimeable number, because it can be changed into a prime (1236490573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51520429 + ... + 51520452.

Almost surely, 2^1236490572 is an apocalyptic number.

1236490572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1236490572 is an abundant number, since it is smaller than the sum of its proper divisors (1648654124).

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

1236490572 is a wasteful number, since it uses less digits than its factorization.

1236490572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103040888 (or 103040886 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 1236490572 is about 35163.7678868463. The cubic root of 1236490572 is about 1073.3225895131.

The spelling of 1236490572 in words is "one billion, two hundred thirty-six million, four hundred ninety thousand, five hundred seventy-two".