11722398 has 16 divisors (see below), whose sum is σ = 23587200. Its totient is φ = 3883736.

The previous prime is 11722397. The next prime is 11722421. The reversal of 11722398 is 89322711.

It is a super-2 number, since 2×11722398² = 274829229740808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11722391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4848 + ... + 6851.

It is an arithmetic number, because the mean of its divisors is an integer number (1474200).

Almost surely, 2^11722398 is an apocalyptic number.

11722398 is an abundant number, since it is smaller than the sum of its proper divisors (11864802).

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

11722398 is a wasteful number, since it uses less digits than its factorization.

11722398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11871.

The product of its digits is 6048, while the sum is 33.

The square root of 11722398 is about 3423.7987674511. The cubic root of 11722398 is about 227.1636409243.

It can be divided in two parts, 1172 and 2398, that added together give a triangular number (3570 = T₈₄).

The spelling of 11722398 in words is "eleven million, seven hundred twenty-two thousand, three hundred ninety-eight".