1296623432 has 48 divisors (see below), whose sum is σ = 2657467440. Its totient is φ = 592782528.

The previous prime is 1296623423. The next prime is 1296623477. The reversal of 1296623432 is 2343266921.

It is a super-2 number, since 2×1296623432² = 3362464648822917248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140183 + ... + 149145.

It is an arithmetic number, because the mean of its divisors is an integer number (55363905).

Almost surely, 2^1296623432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1296623432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1328733720).

1296623432 is an abundant number, since it is smaller than the sum of its proper divisors (1360844008).

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

1296623432 is a wasteful number, since it uses less digits than its factorization.

1296623432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9102 (or 9085 counting only the distinct ones).

The product of its digits is 93312, while the sum is 38.

The square root of 1296623432 is about 36008.6577367166. The cubic root of 1296623432 is about 1090.4471503789.

The spelling of 1296623432 in words is "one billion, two hundred ninety-six million, six hundred twenty-three thousand, four hundred thirty-two".