1503432640 has 56 divisors (see below), whose sum is σ = 3612977280. Its totient is φ = 595842048.

The previous prime is 1503432629. The next prime is 1503432641. The reversal of 1503432640 is 462343051.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1503432599 and 1503432608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1503432641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13329 + ... + 56431.

Almost surely, 2^1503432640 is an apocalyptic number.

1503432640 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 1503432640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1806488640).

1503432640 is an abundant number, since it is smaller than the sum of its proper divisors (2109544640).

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

1503432640 is a wasteful number, since it uses less digits than its factorization.

1503432640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43229 (or 43219 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 1503432640 is about 38774.1233298704. The cubic root of 1503432640 is about 1145.5867755150.

Adding to 1503432640 its reverse (462343051), we get a palindrome (1965775691).

It can be divided in two parts, 15034 and 32640, that added together give a palindrome (47674).

The spelling of 1503432640 in words is "one billion, five hundred three million, four hundred thirty-two thousand, six hundred forty".