1234246640 has 80 divisors (see below), whose sum is σ = 3141200736. Its totient is φ = 447283200.

The previous prime is 1234246627. The next prime is 1234246687. The reversal of 1234246640 is 466424321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1234246597 and 1234246606.

It is a congruent number.

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, 273200 + ... + 277680.

Almost surely, 2^1234246640 is an apocalyptic number.

1234246640 is a gapful number since it is divisible by the number (10) 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 1234246640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1570600368).

1234246640 is an abundant number, since it is smaller than the sum of its proper divisors (1906954096).

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

1234246640 is a wasteful number, since it uses less digits than its factorization.

1234246640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818 (or 4812 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 1234246640 is about 35131.8465213544. The cubic root of 1234246640 is about 1072.6729225291.

The spelling of 1234246640 in words is "one billion, two hundred thirty-four million, two hundred forty-six thousand, six hundred forty".