7897122 has 64 divisors (see below), whose sum is σ = 19008000. Its totient is φ = 2422224.

The previous prime is 7897063. The next prime is 7897147. The reversal of 7897122 is 2217987.

7897122 = T₃₈ + T₃₉ + ... + T₃₆₁.

It is a d-powerful number, because it can be written as 7³ + 8⁵ + 9 + 7⁸ + 1 + 2¹¹ + 2²¹ .

Its product of digits (14112) is a multiple of the sum of its prime factors (252).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44029 + ... + 44207.

It is an arithmetic number, because the mean of its divisors is an integer number (297000).

Almost surely, 2^7897122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7897122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9504000).

7897122 is an abundant number, since it is smaller than the sum of its proper divisors (11110878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7897122 is a wasteful number, since it uses less digits than its factorization.

7897122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 246 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 7897122 is about 2810.1818446499. The cubic root of 7897122 is about 199.1389818917.

The spelling of 7897122 in words is "seven million, eight hundred ninety-seven thousand, one hundred twenty-two".