90134128 has 30 divisors (see below), whose sum is σ = 203148456. Its totient is φ = 38628576.

The previous prime is 90134101. The next prime is 90134131. The reversal of 90134128 is 82143109.

It is a happy number.

It is a super-2 number, since 2×90134128² = 16248322060640768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 90134096 and 90134105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56700 + ... + 58267.

Almost surely, 2^90134128 is an apocalyptic number.

90134128 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

90134128 is an abundant number, since it is smaller than the sum of its proper divisors (113014328).

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

90134128 is a wasteful number, since it uses less digits than its factorization.

90134128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114989 (or 114976 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 90134128 is about 9493.8995149517. The cubic root of 90134128 is about 448.3629870643.

The spelling of 90134128 in words is "ninety million, one hundred thirty-four thousand, one hundred twenty-eight".