1227257420 has 24 divisors (see below), whose sum is σ = 2632077504. Its totient is φ = 480457856.

The previous prime is 1227257411. The next prime is 1227257431. The reversal of 1227257420 is 247527221.

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, 651857 + ... + 653736.

It is an arithmetic number, because the mean of its divisors is an integer number (109669896).

Almost surely, 2^1227257420 is an apocalyptic number.

1227257420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1227257420 is an abundant number, since it is smaller than the sum of its proper divisors (1404820084).

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

1227257420 is a wasteful number, since it uses less digits than its factorization.

1227257420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305649 (or 1305647 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 1227257420 is about 35032.2340138336. The cubic root of 1227257420 is about 1070.6443319815.

The spelling of 1227257420 in words is "one billion, two hundred twenty-seven million, two hundred fifty-seven thousand, four hundred twenty".