22849440 has 96 divisors (see below), whose sum is σ = 72648576. Its totient is φ = 6036480.

The previous prime is 22849429. The next prime is 22849447. The reversal of 22849440 is 4494822.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (22849447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86749 + ... + 87011.

It is an arithmetic number, because the mean of its divisors is an integer number (756756).

Almost surely, 2^22849440 is an apocalyptic number.

22849440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22849440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36324288).

22849440 is an abundant number, since it is smaller than the sum of its proper divisors (49799136).

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

22849440 is a wasteful number, since it uses less digits than its factorization.

22849440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 22849440 is about 4780.1087853730. The cubic root of 22849440 is about 283.7647989849.

The spelling of 22849440 in words is "twenty-two million, eight hundred forty-nine thousand, four hundred forty".