22291742 has 16 divisors (see below), whose sum is σ = 36694512. Its totient is φ = 10072320.

The previous prime is 22291739. The next prime is 22291813. The reversal of 22291742 is 24719222.

It is a super-2 number, since 2×22291742² = 993843522789128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 878 + ... + 6734.

It is an arithmetic number, because the mean of its divisors is an integer number (2293407).

Almost surely, 2^22291742 is an apocalyptic number.

22291742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22291742 is a deficient number, since it is larger than the sum of its proper divisors (14402770).

22291742 is a wasteful number, since it uses less digits than its factorization.

22291742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6043.

The product of its digits is 4032, while the sum is 29.

The square root of 22291742 is about 4721.4131359160. The cubic root of 22291742 is about 281.4370928316.

The spelling of 22291742 in words is "twenty-two million, two hundred ninety-one thousand, seven hundred forty-two".