88001978 has 4 divisors (see below), whose sum is σ = 132002970. Its totient is φ = 44000988.

The previous prime is 88001959. The next prime is 88001987. The reversal of 88001978 is 87910088.

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., 63568729 + 24433249 = 7973^2 + 4943^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22000493 + ... + 22000496.

Almost surely, 2^88001978 is an apocalyptic number.

88001978 is a deficient number, since it is larger than the sum of its proper divisors (44000992).

88001978 is a wasteful number, since it uses less digits than its factorization.

88001978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44000991.

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 88001978 is about 9380.9369468087. The cubic root of 88001978 is about 444.7993506894.

The spelling of 88001978 in words is "eighty-eight million, one thousand, nine hundred seventy-eight".