88821818 has 4 divisors (see below), whose sum is σ = 133232730. Its totient is φ = 44410908.

The previous prime is 88821767. The next prime is 88821823. The reversal of 88821818 is 81812888.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 87291649 + 1530169 = 9343^2 + 1237^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22205453 + ... + 22205456.

Almost surely, 2^88821818 is an apocalyptic number.

88821818 is a deficient number, since it is larger than the sum of its proper divisors (44410912).

88821818 is a wasteful number, since it uses less digits than its factorization.

88821818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44410911.

The product of its digits is 65536, while the sum is 44.

The square root of 88821818 is about 9424.5327735650. The cubic root of 88821818 is about 446.1763564864.

The spelling of 88821818 in words is "eighty-eight million, eight hundred twenty-one thousand, eight hundred eighteen".