2154402432 has 192 divisors, whose sum is σ = 7630546560. Its totient is φ = 568166400.

The previous prime is 2154402421. The next prime is 2154402449. The reversal of 2154402432 is 2342044512.

2154402432 is a `hidden beast` number, since 215 + 4 + 402 + 43 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a junction number, because it is equal to n+sod(n) for n = 2154402396 and 2154402405.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94557 + ... + 115107.

It is an arithmetic number, because the mean of its divisors is an integer number (39742430).

Almost surely, 2^2154402432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154402432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3815273280).

2154402432 is an abundant number, since it is smaller than the sum of its proper divisors (5476144128).

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

2154402432 is a wasteful number, since it uses less digits than its factorization.

2154402432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20591 (or 20576 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 2154402432 is about 46415.5408457124. The cubic root of 2154402432 is about 1291.5432189220.

Adding to 2154402432 its reverse (2342044512), we get a palindrome (4496446944).

The spelling of 2154402432 in words is "two billion, one hundred fifty-four million, four hundred two thousand, four hundred thirty-two".