1532663440 has 120 divisors (see below), whose sum is σ = 4476588480. Its totient is φ = 477692160.

The previous prime is 1532663417. The next prime is 1532663459. The reversal of 1532663440 is 443662351.

It is a junction number, because it is equal to n+sod(n) for n = 1532663396 and 1532663405.

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, 56451 + ... + 79069.

It is an arithmetic number, because the mean of its divisors is an integer number (37304904).

Almost surely, 2^1532663440 is an apocalyptic number.

1532663440 is a gapful number since it is divisible by the number (10) 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 1532663440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2238294240).

1532663440 is an abundant number, since it is smaller than the sum of its proper divisors (2943925040).

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

1532663440 is a wasteful number, since it uses less digits than its factorization.

1532663440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22661 (or 22644 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 1532663440 is about 39149.2457143174. The cubic root of 1532663440 is about 1152.9636074925.

The spelling of 1532663440 in words is "one billion, five hundred thirty-two million, six hundred sixty-three thousand, four hundred forty".