13073240 has 16 divisors (see below), whose sum is σ = 29414880. Its totient is φ = 5229280.

The previous prime is 13073239. The next prime is 13073243. The reversal of 13073240 is 4237031.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13073243) 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, 163376 + ... + 163455.

It is an arithmetic number, because the mean of its divisors is an integer number (1838430).

Almost surely, 2^13073240 is an apocalyptic number.

13073240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13073240 is an abundant number, since it is smaller than the sum of its proper divisors (16341640).

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

13073240 is a wasteful number, since it uses less digits than its factorization.

13073240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326842 (or 326838 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 13073240 is about 3615.6935710870. The cubic root of 13073240 is about 235.5742107109.

The spelling of 13073240 in words is "thirteen million, seventy-three thousand, two hundred forty".