88641220 has 24 divisors (see below), whose sum is σ = 186758208. Its totient is φ = 35340000.

The previous prime is 88641209. The next prime is 88641229. The reversal of 88641220 is 2214688.

It is not an unprimeable number, because it can be changed into a prime (88641229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 906 + ... + 13345.

It is an arithmetic number, because the mean of its divisors is an integer number (7781592).

Almost surely, 2^88641220 is an apocalyptic number.

It is an amenable number.

88641220 is an abundant number, since it is smaller than the sum of its proper divisors (98116988).

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

88641220 is a wasteful number, since it uses less digits than its factorization.

88641220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14571 (or 14569 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 88641220 is about 9414.9466275704. The cubic root of 88641220 is about 445.8737535388.

The spelling of 88641220 in words is "eighty-eight million, six hundred forty-one thousand, two hundred twenty".