1332634640 has 40 divisors (see below), whose sum is σ = 3104419608. Its totient is φ = 532014080.

The previous prime is 1332634627. The next prime is 1332634679. The reversal of 1332634640 is 464362331.

It can be written as a sum of positive squares in 4 ways, for example, as 316555264 + 1016079376 = 17792^2 + 31876^2 .

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 = 1332634597 and 1332634606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25694 + ... + 57666.

Almost surely, 2^1332634640 is an apocalyptic number.

1332634640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1332634640 is an abundant number, since it is smaller than the sum of its proper divisors (1771784968).

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

1332634640 is a wasteful number, since it uses less digits than its factorization.

1332634640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32507 (or 32501 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 1332634640 is about 36505.2686608385. The cubic root of 1332634640 is about 1100.4501298273.

Adding to 1332634640 its reverse (464362331), we get a palindrome (1796996971).

The spelling of 1332634640 in words is "one billion, three hundred thirty-two million, six hundred thirty-four thousand, six hundred forty".