1247906332 has 24 divisors (see below), whose sum is σ = 2209140864. Its totient is φ = 616749552.

The previous prime is 1247906327. The next prime is 1247906351. The reversal of 1247906332 is 2336097421.

It is a junction number, because it is equal to n+sod(n) for n = 1247906291 and 1247906300.

It is a congruent number.

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, 205443 + ... + 211429.

It is an arithmetic number, because the mean of its divisors is an integer number (92047536).

Almost surely, 2^1247906332 is an apocalyptic number.

It is an amenable number.

1247906332 is a deficient number, since it is larger than the sum of its proper divisors (961234532).

1247906332 is a wasteful number, since it uses less digits than its factorization.

1247906332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6585 (or 6583 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 1247906332 is about 35325.7177138696. The cubic root of 1247906332 is about 1076.6155861261.

The spelling of 1247906332 in words is "one billion, two hundred forty-seven million, nine hundred six thousand, three hundred thirty-two".