1455868872 has 144 divisors (see below), whose sum is σ = 4161603420. Its totient is φ = 459613440.

The previous prime is 1455868807. The next prime is 1455868873. The reversal of 1455868872 is 2788685541.

1455868872 is a `hidden beast` number, since 1 + 4 + 558 + 6 + 8 + 87 + 2 = 666.

1455868872 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1397712996 + 58155876 = 37386^2 + 7626^2 .

It is not an unprimeable number, because it can be changed into a prime (1455868873) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3666978 + ... + 3667374.

Almost surely, 2^1455868872 is an apocalyptic number.

1455868872 is a gapful number since it is divisible by the number (12) 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 1455868872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2080801710).

1455868872 is an abundant number, since it is smaller than the sum of its proper divisors (2705734548).

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

1455868872 is a wasteful number, since it uses less digits than its factorization.

1455868872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 486 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 54.

The square root of 1455868872 is about 38155.8497743138. The cubic root of 1455868872 is about 1133.3761954570.

The spelling of 1455868872 in words is "one billion, four hundred fifty-five million, eight hundred sixty-eight thousand, eight hundred seventy-two".