457272729 has 32 divisors (see below), whose sum is σ = 721981440. Its totient is φ = 285371856.

The previous prime is 457272727. The next prime is 457272743. The reversal of 457272729 is 927272754.

457272729 is a `hidden beast` number, since 4 + 572 + 7 + 2 + 72 + 9 = 666.

It is not a de Polignac number, because 457272729 - 2¹ = 457272727 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (457272721) 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, 21354 + ... + 37020.

It is an arithmetic number, because the mean of its divisors is an integer number (22561920).

Almost surely, 2^457272729 is an apocalyptic number.

It is an amenable number.

457272729 is a deficient number, since it is larger than the sum of its proper divisors (264708711).

457272729 is a wasteful number, since it uses less digits than its factorization.

457272729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15746 (or 15740 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 457272729 is about 21383.9362372787. The cubic root of 457272729 is about 770.4156574054.

The spelling of 457272729 in words is "four hundred fifty-seven million, two hundred seventy-two thousand, seven hundred twenty-nine".