1455424440 has 64 divisors (see below), whose sum is σ = 4467830400. Its totient is φ = 379085952.

The previous prime is 1455424423. The next prime is 1455424457. The reversal of 1455424440 is 444245541.

It is an interprime number because it is at equal distance from previous prime (1455424423) and next prime (1455424457).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135870 + ... + 146189.

It is an arithmetic number, because the mean of its divisors is an integer number (69809850).

Almost surely, 2^1455424440 is an apocalyptic number.

1455424440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1455424440 is an abundant number, since it is smaller than the sum of its proper divisors (3012405960).

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

1455424440 is a wasteful number, since it uses less digits than its factorization.

1455424440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282116 (or 282112 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 33.

The square root of 1455424440 is about 38150.0254259417. The cubic root of 1455424440 is about 1133.2608554189.

Adding to 1455424440 its reverse (444245541), we get a palindrome (1899669981).

The spelling of 1455424440 in words is "one billion, four hundred fifty-five million, four hundred twenty-four thousand, four hundred forty".