88728133 has 4 divisors (see below), whose sum is σ = 95553388. Its totient is φ = 81902880.

The previous prime is 88728127. The next prime is 88728137. The reversal of 88728133 is 33182788.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44930209 + 43797924 = 6703^2 + 6618^2 .

It is a cyclic number.

It is not a de Polignac number, because 88728133 - 2⁹ = 88727621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88728137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3412608 + ... + 3412633.

It is an arithmetic number, because the mean of its divisors is an integer number (23888347).

Almost surely, 2^88728133 is an apocalyptic number.

It is an amenable number.

88728133 is a deficient number, since it is larger than the sum of its proper divisors (6825255).

88728133 is a wasteful number, since it uses less digits than its factorization.

88728133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6825254.

The product of its digits is 64512, while the sum is 40.

The square root of 88728133 is about 9419.5611893548. The cubic root of 88728133 is about 446.0194328171.

The spelling of 88728133 in words is "eighty-eight million, seven hundred twenty-eight thousand, one hundred thirty-three".