1212464736 has 144 divisors (see below), whose sum is σ = 3971455488. Its totient is φ = 343699200.

The previous prime is 1212464723. The next prime is 1212464749. The reversal of 1212464736 is 6374642121.

1212464736 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 4 + 647 + 3 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (1212464723) and next prime (1212464749).

It is a tau number, because it is divible by the number of its divisors (144).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1212464736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 261801 + ... + 266391.

It is an arithmetic number, because the mean of its divisors is an integer number (27579552).

Almost surely, 2^1212464736 is an apocalyptic number.

1212464736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212464736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1985727744).

1212464736 is an abundant number, since it is smaller than the sum of its proper divisors (2758990752).

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

1212464736 is a wasteful number, since it uses less digits than its factorization.

1212464736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745 (or 4734 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 1212464736 is about 34820.4643277484. The cubic root of 1212464736 is about 1066.3252799870.

The spelling of 1212464736 in words is "one billion, two hundred twelve million, four hundred sixty-four thousand, seven hundred thirty-six".