8172046 has 4 divisors (see below), whose sum is σ = 12258072. Its totient is φ = 4086022.

The previous prime is 8172037. The next prime is 8172049. The reversal of 8172046 is 6402718.

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

It is a super-2 number, since 2×8172046² = 133564671652232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8172049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2043010 + ... + 2043013.

It is an arithmetic number, because the mean of its divisors is an integer number (3064518).

Almost surely, 2^8172046 is an apocalyptic number.

8172046 is a deficient number, since it is larger than the sum of its proper divisors (4086026).

8172046 is a wasteful number, since it uses less digits than its factorization.

8172046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086025.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 8172046 is about 2858.6790655826. The cubic root of 8172046 is about 201.4235600105.

It can be divided in two parts, 81 and 72046, that added together give a palindrome (72127).

The spelling of 8172046 in words is "eight million, one hundred seventy-two thousand, forty-six".