128436948 has 24 divisors (see below), whose sum is σ = 332984960. Its totient is φ = 42812280.

The previous prime is 128436901. The next prime is 128436949. The reversal of 128436948 is 849634821.

It is a happy number.

128436948 is a `hidden beast` number, since 1 + 284 + 369 + 4 + 8 = 666.

It is a super-2 number, since 2×128436948² = 32992099223109408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128436949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594508 + ... + 594723.

Almost surely, 2^128436948 is an apocalyptic number.

128436948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128436948 is an abundant number, since it is smaller than the sum of its proper divisors (204548012).

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

128436948 is a wasteful number, since it uses less digits than its factorization.

128436948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189244 (or 1189236 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 128436948 is about 11333.0026030174. The cubic root of 128436948 is about 504.5412269783.

It can be divided in two parts, 12843 and 6948, that added together give a palindrome (19791).

The spelling of 128436948 in words is "one hundred twenty-eight million, four hundred thirty-six thousand, nine hundred forty-eight".