724274 has 4 divisors (see below), whose sum is σ = 1086414. Its totient is φ = 362136.

The previous prime is 724267. The next prime is 724277. The reversal of 724274 is 472427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 472427 = 229 ⋅2063.

It can be written as a sum of positive squares in only one way, i.e., 552049 + 172225 = 743^2 + 415^2 .

It is not an unprimeable number, because it can be changed into a prime (724277) by changing a digit.

724274 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181067 + ... + 181070.

2⁷²⁴²⁷⁴ is an apocalyptic number.

724274 is a deficient number, since it is larger than the sum of its proper divisors (362140).

724274 is a wasteful number, since it uses less digits than its factorization.

724274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362139.

The product of its digits is 3136, while the sum is 26.

The square root of 724274 is about 851.0428896360. The cubic root of 724274 is about 89.8050926092.

The spelling of 724274 in words is "seven hundred twenty-four thousand, two hundred seventy-four", and thus it is an iban number.