88237721 has 16 divisors (see below), whose sum is σ = 104028288. Its totient is φ = 73785600.

The previous prime is 88237717. The next prime is 88237733. The reversal of 88237721 is 12773288.

It is a cyclic number.

It is not a de Polignac number, because 88237721 - 2² = 88237717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (88237771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47276 + ... + 49106.

It is an arithmetic number, because the mean of its divisors is an integer number (6501768).

Almost surely, 2^88237721 is an apocalyptic number.

It is an amenable number.

88237721 is a deficient number, since it is larger than the sum of its proper divisors (15790567).

88237721 is a wasteful number, since it uses less digits than its factorization.

88237721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192.

The product of its digits is 37632, while the sum is 38.

The square root of 88237721 is about 9393.4935460669. The cubic root of 88237721 is about 445.1961782835.

The spelling of 88237721 in words is "eighty-eight million, two hundred thirty-seven thousand, seven hundred twenty-one".