12720552 has 32 divisors (see below), whose sum is σ = 34248480. Its totient is φ = 3913920.

The previous prime is 12720529. The next prime is 12720559. The reversal of 12720552 is 25502721.

It is a super-3 number, since 3×12720552³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (12720559) 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, 20074 + ... + 20697.

It is an arithmetic number, because the mean of its divisors is an integer number (1070265).

Almost surely, 2^12720552 is an apocalyptic number.

12720552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12720552 is an abundant number, since it is smaller than the sum of its proper divisors (21527928).

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

12720552 is a wasteful number, since it uses less digits than its factorization.

12720552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40793 (or 40789 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 12720552 is about 3566.5882857431. The cubic root of 12720552 is about 233.4364405992.

The spelling of 12720552 in words is "twelve million, seven hundred twenty thousand, five hundred fifty-two".