2154224040 has 32 divisors (see below), whose sum is σ = 6462672480. Its totient is φ = 574459712.

The previous prime is 2154223987. The next prime is 2154224041. The reversal of 2154224040 is 404224512.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2154224040.

It is not an unprimeable number, because it can be changed into a prime (2154224041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8975814 + ... + 8976053.

It is an arithmetic number, because the mean of its divisors is an integer number (201958515).

Almost surely, 2^2154224040 is an apocalyptic number.

2154224040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154224040 is an abundant number, since it is smaller than the sum of its proper divisors (4308448440).

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

2154224040 is a wasteful number, since it uses less digits than its factorization.

2154224040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17951881 (or 17951877 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 2154224040 is about 46413.6191219775. The cubic root of 2154224040 is about 1291.5075698508.

Adding to 2154224040 its reverse (404224512), we get a palindrome (2558448552).

The spelling of 2154224040 in words is "two billion, one hundred fifty-four million, two hundred twenty-four thousand, forty".