247474 has 4 divisors (see below), whose sum is σ = 371214. Its totient is φ = 123736.

The previous prime is 247463. The next prime is 247501. The reversal of 247474 is 474742.

247474 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 154449 + 93025 = 393^2 + 305^2 .

It is a super-2 number, since 2×247474² = 122486761352, which contains 22 as substring.

247474 is an undulating number in base 15.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61867 + ... + 61870.

2²⁴⁷⁴⁷⁴ is an apocalyptic number.

247474 is a deficient number, since it is larger than the sum of its proper divisors (123740).

247474 is a wasteful number, since it uses less digits than its factorization.

247474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123739.

The product of its digits is 6272, while the sum is 28.

The square root of 247474 is about 497.4675868838. The cubic root of 247474 is about 62.7831631605.

The spelling of 247474 in words is "two hundred forty-seven thousand, four hundred seventy-four", and thus it is an iban number.