Search a number
-
+
128038488 = 2335334937
BaseRepresentation
bin1111010000110…
…11011001011000
322220221000210020
413220123121120
5230234212423
620412150440
73113211024
oct750333130
9286830706
10128038488
1166302236
1236a68420
13206aca26
141300d384
15b3924e3
hex7a1b658

128038488 has 16 divisors (see below), whose sum is σ = 320096280. Its totient is φ = 42679488.

The previous prime is 128038459. The next prime is 128038499. The reversal of 128038488 is 884830821.

It is a super-2 number, since 2×1280384882 = 32787708818652288, which contains 22 as substring.

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, 2667445 + ... + 2667492.

Almost surely, 2128038488 is an apocalyptic number.

It is an amenable number.

128038488 is an abundant number, since it is smaller than the sum of its proper divisors (192057792).

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

128038488 is a wasteful number, since it uses less digits than its factorization.

128038488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5334946 (or 5334942 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 42.

The square root of 128038488 is about 11315.4093165029. The cubic root of 128038488 is about 504.0189272307.

The spelling of 128038488 in words is "one hundred twenty-eight million, thirty-eight thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 24 5334937 10669874 16004811 21339748 32009622 42679496 64019244 128038488