128248436 has 12 divisors (see below), whose sum is σ = 227596320. Its totient is φ = 63220920.

The previous prime is 128248429. The next prime is 128248441. The reversal of 128248436 is 634842821.

It is a super-2 number, since 2×128248436² = 32895322672892192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128248436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225506 + ... + 226073.

It is an arithmetic number, because the mean of its divisors is an integer number (18966360).

Almost surely, 2^128248436 is an apocalyptic number.

It is an amenable number.

128248436 is a deficient number, since it is larger than the sum of its proper divisors (99347884).

128248436 is a wasteful number, since it uses less digits than its factorization.

128248436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451654 (or 451652 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 128248436 is about 11324.6826004087. The cubic root of 128248436 is about 504.2942610585.

The spelling of 128248436 in words is "one hundred twenty-eight million, two hundred forty-eight thousand, four hundred thirty-six".