20626378 has 4 divisors (see below), whose sum is σ = 30939570. Its totient is φ = 10313188.

The previous prime is 20626363. The next prime is 20626379. The reversal of 20626378 is 87362602.

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., 19333609 + 1292769 = 4397^2 + 1137^2 .

It is not an unprimeable number, because it can be changed into a prime (20626379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5156593 + ... + 5156596.

Almost surely, 2^20626378 is an apocalyptic number.

20626378 is a deficient number, since it is larger than the sum of its proper divisors (10313192).

20626378 is a wasteful number, since it uses less digits than its factorization.

20626378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10313191.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 20626378 is about 4541.6272414191. The cubic root of 20626378 is about 274.2464350116.

The spelling of 20626378 in words is "twenty million, six hundred twenty-six thousand, three hundred seventy-eight".