13050440 has 32 divisors (see below), whose sum is σ = 31623480. Its totient is φ = 4818432.

The previous prime is 13050437. The next prime is 13050487. The reversal of 13050440 is 4405031.

13050440 = T₂₆₄ + T₂₆₅ + ... + T₄₅₈.

It can be written as a sum of positive squares in 4 ways, for example, as 6770404 + 6280036 = 2602^2 + 2506^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12029 + ... + 13068.

Almost surely, 2^13050440 is an apocalyptic number.

13050440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13050440 is an abundant number, since it is smaller than the sum of its proper divisors (18573040).

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

13050440 is a wasteful number, since it uses less digits than its factorization.

13050440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25121 (or 25117 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 13050440 is about 3612.5392731429. The cubic root of 13050440 is about 235.4371822603.

Adding to 13050440 its reverse (4405031), we get a palindrome (17455471).

The spelling of 13050440 in words is "thirteen million, fifty thousand, four hundred forty".