1272607406 has 32 divisors (see below), whose sum is σ = 2268794880. Its totient is φ = 523807200.

The previous prime is 1272607387. The next prime is 1272607409. The reversal of 1272607406 is 6047062721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272607409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69341 + ... + 85751.

It is an arithmetic number, because the mean of its divisors is an integer number (70899840).

Almost surely, 2^1272607406 is an apocalyptic number.

1272607406 is a deficient number, since it is larger than the sum of its proper divisors (996187474).

1272607406 is a wasteful number, since it uses less digits than its factorization.

1272607406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16640.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 1272607406 is about 35673.6233932019. The cubic root of 1272607406 is about 1083.6727400648.

The spelling of 1272607406 in words is "one billion, two hundred seventy-two million, six hundred seven thousand, four hundred six".