22051340 has 12 divisors (see below), whose sum is σ = 46307856. Its totient is φ = 8820528.

The previous prime is 22051331. The next prime is 22051369. The reversal of 22051340 is 4315022.

It is a super-3 number, since 3×22051340³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551264 + ... + 551303.

It is an arithmetic number, because the mean of its divisors is an integer number (3858988).

Almost surely, 2^22051340 is an apocalyptic number.

22051340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22051340 is an abundant number, since it is smaller than the sum of its proper divisors (24256516).

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

22051340 is a wasteful number, since it uses less digits than its factorization.

22051340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102576 (or 1102574 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22051340 is about 4695.8854330147. The cubic root of 22051340 is about 280.4217284307.

Adding to 22051340 its reverse (4315022), we get a palindrome (26366362).

It can be divided in two parts, 2 and 2051340, that multiplied together give a triangular number (4102680 = T₂₈₆₄).

The spelling of 22051340 in words is "twenty-two million, fifty-one thousand, three hundred forty".