234773721 has 56 divisors (see below), whose sum is σ = 433352640. Its totient is φ = 123801696.

The previous prime is 234773711. The next prime is 234773753. The reversal of 234773721 is 127377432.

It is a happy number.

It is not a de Polignac number, because 234773721 - 2¹¹ = 234771673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (234773711) 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 55 ways as a sum of consecutive naturals, for example, 64570 + ... + 68108.

It is an arithmetic number, because the mean of its divisors is an integer number (7738440).

Almost surely, 2^234773721 is an apocalyptic number.

234773721 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

234773721 is a deficient number, since it is larger than the sum of its proper divisors (198578919).

234773721 is an equidigital number, since it uses as much as digits as its factorization.

234773721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577 (or 3562 counting only the distinct ones).

The product of its digits is 49392, while the sum is 36.

The square root of 234773721 is about 15322.3275320690. The cubic root of 234773721 is about 616.9024491440.

The spelling of 234773721 in words is "two hundred thirty-four million, seven hundred seventy-three thousand, seven hundred twenty-one".