88289281 has 4 divisors (see below), whose sum is σ = 89532864. Its totient is φ = 87045700.

The previous prime is 88289263. The next prime is 88289287. The reversal of 88289281 is 18298288.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88289281 - 2¹⁹ = 87764993 is a prime.

It is a super-2 number, since 2×88289281² = 15589994278993922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88289287) 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, 621685 + ... + 621826.

It is an arithmetic number, because the mean of its divisors is an integer number (22383216).

Almost surely, 2^88289281 is an apocalyptic number.

It is an amenable number.

88289281 is a deficient number, since it is larger than the sum of its proper divisors (1243583).

88289281 is a wasteful number, since it uses less digits than its factorization.

88289281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243582.

The product of its digits is 147456, while the sum is 46.

The square root of 88289281 is about 9396.2375981028. The cubic root of 88289281 is about 445.2828753150.

The spelling of 88289281 in words is "eighty-eight million, two hundred eighty-nine thousand, two hundred eighty-one".