1302668240 has 40 divisors (see below), whose sum is σ = 3071374848. Its totient is φ = 513726080.

The previous prime is 1302668239. The next prime is 1302668249. The reversal of 1302668240 is 428662031.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1302668197 and 1302668206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302668249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108992 + ... + 120351.

Almost surely, 2^1302668240 is an apocalyptic number.

1302668240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302668240 is an abundant number, since it is smaller than the sum of its proper divisors (1768706608).

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

1302668240 is a wasteful number, since it uses less digits than its factorization.

1302668240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229427 (or 229421 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1302668240 is about 36092.4956188956. The cubic root of 1302668240 is about 1092.1390646155.

The spelling of 1302668240 in words is "one billion, three hundred two million, six hundred sixty-eight thousand, two hundred forty".