1454723440 has 20 divisors (see below), whose sum is σ = 3382232184. Its totient is φ = 581889344.

The previous prime is 1454723401. The next prime is 1454723441. The reversal of 1454723440 is 443274541.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1454723396 and 1454723405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1454723441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9091942 + ... + 9092101.

Almost surely, 2^1454723440 is an apocalyptic number.

1454723440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1454723440 is an abundant number, since it is smaller than the sum of its proper divisors (1927508744).

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

1454723440 is a wasteful number, since it uses less digits than its factorization.

1454723440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18184056 (or 18184050 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 1454723440 is about 38140.8369074408. The cubic root of 1454723440 is about 1133.0788825147.

Adding to 1454723440 its reverse (443274541), we get a palindrome (1897997981).

The spelling of 1454723440 in words is "one billion, four hundred fifty-four million, seven hundred twenty-three thousand, four hundred forty".