128492630 has 64 divisors (see below), whose sum is σ = 294658560. Its totient is φ = 39273984.

The previous prime is 128492563. The next prime is 128492633. The reversal of 128492630 is 36294821.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128492633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19769 + ... + 25451.

It is an arithmetic number, because the mean of its divisors is an integer number (4604040).

Almost surely, 2^128492630 is an apocalyptic number.

128492630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128492630 is an abundant number, since it is smaller than the sum of its proper divisors (166165930).

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

128492630 is a wasteful number, since it uses less digits than its factorization.

128492630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5733.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 128492630 is about 11335.4589673290. The cubic root of 128492630 is about 504.6141286527.

The spelling of 128492630 in words is "one hundred twenty-eight million, four hundred ninety-two thousand, six hundred thirty".