20232578 has 8 divisors (see below), whose sum is σ = 30714768. Its totient is φ = 9994324.

The previous prime is 20232559. The next prime is 20232581. The reversal of 20232578 is 87523202.

20232578 = 62² + 63² + ... + 393².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20232578.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 60776 + ... + 61107.

It is an arithmetic number, because the mean of its divisors is an integer number (3839346).

Almost surely, 2^20232578 is an apocalyptic number.

20232578 is a deficient number, since it is larger than the sum of its proper divisors (10482190).

20232578 is a wasteful number, since it uses less digits than its factorization.

20232578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121968.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 20232578 is about 4498.0638056835. The cubic root of 20232578 is about 272.4898989045.

The spelling of 20232578 in words is "twenty million, two hundred thirty-two thousand, five hundred seventy-eight".