427263261 has 32 divisors (see below), whose sum is σ = 614016000. Its totient is φ = 263326464.

The previous prime is 427263257. The next prime is 427263289. The reversal of 427263261 is 162362724.

It is not a de Polignac number, because 427263261 - 2² = 427263257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427263251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 855990 + ... + 856488.

It is an arithmetic number, because the mean of its divisors is an integer number (19188000).

Almost surely, 2^427263261 is an apocalyptic number.

It is an amenable number.

427263261 is a deficient number, since it is larger than the sum of its proper divisors (186752739).

427263261 is a wasteful number, since it uses less digits than its factorization.

427263261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785.

The product of its digits is 24192, while the sum is 33.

The square root of 427263261 is about 20670.3473845990. The cubic root of 427263261 is about 753.1795451642.

The spelling of 427263261 in words is "four hundred twenty-seven million, two hundred sixty-three thousand, two hundred sixty-one".