1427205856 has 24 divisors (see below), whose sum is σ = 2821485744. Its totient is φ = 710638080.

The previous prime is 1427205823. The next prime is 1427205953. The reversal of 1427205856 is 6585027241.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84820 + ... + 100243.

It is an arithmetic number, because the mean of its divisors is an integer number (117561906).

Almost surely, 2^1427205856 is an apocalyptic number.

1427205856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1427205856 is a deficient number, since it is larger than the sum of its proper divisors (1394279888).

1427205856 is a wasteful number, since it uses less digits than its factorization.

1427205856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185314 (or 185306 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 1427205856 is about 37778.3781547064. The cubic root of 1427205856 is about 1125.8889056212. Note that the first 3 decimals are identical.

The spelling of 1427205856 in words is "one billion, four hundred twenty-seven million, two hundred five thousand, eight hundred fifty-six".