1246430640 has 480 divisors, whose sum is σ = 5015678976. Its totient is φ = 253532160.

The previous prime is 1246430639. The next prime is 1246430641. The reversal of 1246430640 is 460346421.

It is an interprime number because it is at equal distance from previous prime (1246430639) and next prime (1246430641).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a zygodrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1246430598 and 1246430607.

It is not an unprimeable number, because it can be changed into a prime (1246430641) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4739149 + ... + 4739411.

Almost surely, 2^1246430640 is an apocalyptic number.

1246430640 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 1246430640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2507839488).

1246430640 is an abundant number, since it is smaller than the sum of its proper divisors (3769248336).

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

1246430640 is a wasteful number, since it uses less digits than its factorization.

1246430640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 1246430640 is about 35304.8245994793. The cubic root of 1246430640 is about 1076.1910404610.

The spelling of 1246430640 in words is "one billion, two hundred forty-six million, four hundred thirty thousand, six hundred forty".