128746630 has 16 divisors (see below), whose sum is σ = 236675520. Its totient is φ = 50402752.

The previous prime is 128746621. The next prime is 128746649. The reversal of 128746630 is 36647821.

It is a self number, because there is not a number n which added to its sum of digits gives 128746630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136495 + ... + 137434.

It is an arithmetic number, because the mean of its divisors is an integer number (14792220).

Almost surely, 2^128746630 is an apocalyptic number.

128746630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128746630 is a deficient number, since it is larger than the sum of its proper divisors (107928890).

128746630 is a wasteful number, since it uses less digits than its factorization.

128746630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273983.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 128746630 is about 11346.6572169957. The cubic root of 128746630 is about 504.9464113315.

The spelling of 128746630 in words is "one hundred twenty-eight million, seven hundred forty-six thousand, six hundred thirty".