427772631 has 72 divisors (see below), whose sum is σ = 716540160. Its totient is φ = 226100160.

The previous prime is 427772629. The next prime is 427772633. The reversal of 427772631 is 136277724.

It is an interprime number because it is at equal distance from previous prime (427772629) and next prime (427772633).

It is not a de Polignac number, because 427772631 - 2¹ = 427772629 is a prime.

It is a super-2 number, since 2×427772631² = 365978847665324322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 427772631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427772633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1165410 + ... + 1165776.

Almost surely, 2^427772631 is an apocalyptic number.

427772631 is a deficient number, since it is larger than the sum of its proper divisors (288767529).

427772631 is a wasteful number, since it uses less digits than its factorization.

427772631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 413 counting only the distinct ones).

The product of its digits is 98784, while the sum is 39.

The square root of 427772631 is about 20682.6649878588. The cubic root of 427772631 is about 753.4787320617.

The spelling of 427772631 in words is "four hundred twenty-seven million, seven hundred seventy-two thousand, six hundred thirty-one".