127532440 has 32 divisors (see below), whose sum is σ = 327941280. Its totient is φ = 43725312.

The previous prime is 127532429. The next prime is 127532441. The reversal of 127532440 is 44235721.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 127532399 and 127532408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127532441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227457 + ... + 228016.

It is an arithmetic number, because the mean of its divisors is an integer number (10248165).

Almost surely, 2^127532440 is an apocalyptic number.

127532440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127532440 is an abundant number, since it is smaller than the sum of its proper divisors (200408840).

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

127532440 is a wasteful number, since it uses less digits than its factorization.

127532440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455491 (or 455487 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 127532440 is about 11293.0261666216. The cubic root of 127532440 is about 503.3540372266.

The spelling of 127532440 in words is "one hundred twenty-seven million, five hundred thirty-two thousand, four hundred forty".