2154234456 has 96 divisors (see below), whose sum is σ = 6441664320. Its totient is φ = 644913600.

The previous prime is 2154234377. The next prime is 2154234479. The reversal of 2154234456 is 6544324512.

2154234456 is a `hidden beast` number, since 21 + 542 + 3 + 44 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2154234456.

It is a congruent number.

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, 49351 + ... + 82121.

It is an arithmetic number, because the mean of its divisors is an integer number (67100670).

Almost surely, 2^2154234456 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 2154234456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3220832160).

2154234456 is an abundant number, since it is smaller than the sum of its proper divisors (4287429864).

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

2154234456 is a wasteful number, since it uses less digits than its factorization.

2154234456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32877 (or 32870 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 2154234456 is about 46413.7313302863. The cubic root of 2154234456 is about 1291.5096513924.

Adding to 2154234456 its reverse (6544324512), we get a palindrome (8698558968).

The spelling of 2154234456 in words is "two billion, one hundred fifty-four million, two hundred thirty-four thousand, four hundred fifty-six".