128378030 has 32 divisors (see below), whose sum is σ = 255864960. Its totient is φ = 45983520.

The previous prime is 128378027. The next prime is 128378053. The reversal of 128378030 is 30873821.

128378030 = T₁₉₂₄ + T₁₉₂₅ + ... + T₁₉₉₀.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1340 + ... + 16079.

It is an arithmetic number, because the mean of its divisors is an integer number (7995780).

Almost surely, 2^128378030 is an apocalyptic number.

128378030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128378030 is a deficient number, since it is larger than the sum of its proper divisors (127486930).

128378030 is a wasteful number, since it uses less digits than its factorization.

128378030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17504.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 128378030 is about 11330.4029054575. The cubic root of 128378030 is about 504.4640656237.

The spelling of 128378030 in words is "one hundred twenty-eight million, three hundred seventy-eight thousand, thirty".