20224606440 has 32 divisors (see below), whose sum is σ = 60673819680. Its totient is φ = 5393228352.

The previous prime is 20224606439. The next prime is 20224606477. The reversal of 20224606440 is 4460642202.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20224606398 and 20224606407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84269074 + ... + 84269313.

It is an arithmetic number, because the mean of its divisors is an integer number (1896056865).

Almost surely, 2^20224606440 is an apocalyptic number.

20224606440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20224606440 is an abundant number, since it is smaller than the sum of its proper divisors (40449213240).

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

20224606440 is a wasteful number, since it uses less digits than its factorization.

20224606440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168538401 (or 168538397 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 20224606440 in words is "twenty billion, two hundred twenty-four million, six hundred six thousand, four hundred forty".