872434 has 4 divisors (see below), whose sum is σ = 1308654. Its totient is φ = 436216.

The previous prime is 872429. The next prime is 872437. The reversal of 872434 is 434278.

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., 494209 + 378225 = 703^2 + 615^2 .

It is a super-2 number, since 2×872434² = 1522282168712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (872437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218107 + ... + 218110.

2⁸⁷²⁴³⁴ is an apocalyptic number.

872434 is a deficient number, since it is larger than the sum of its proper divisors (436220).

872434 is a wasteful number, since it uses less digits than its factorization.

872434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436219.

The product of its digits is 5376, while the sum is 28.

The square root of 872434 is about 934.0417549553. The cubic root of 872434 is about 95.5529708052.

The spelling of 872434 in words is "eight hundred seventy-two thousand, four hundred thirty-four".