20626377 has 16 divisors (see below), whose sum is σ = 29626368. Its totient is φ = 12727440.

The previous prime is 20626363. The next prime is 20626379. The reversal of 20626377 is 77362602.

It is not a de Polignac number, because 20626377 - 2⁶ = 20626313 is a prime.

It is a super-2 number, since 2×20626377² = 850894856292258, which contains 22 as substring.

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 in 15 ways as a sum of consecutive naturals, for example, 2683 + ... + 6960.

It is an arithmetic number, because the mean of its divisors is an integer number (1851648).

Almost surely, 2^20626377 is an apocalyptic number.

It is an amenable number.

20626377 is a deficient number, since it is larger than the sum of its proper divisors (8999991).

20626377 is a wasteful number, since it uses less digits than its factorization.

20626377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9700.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 20626377 is about 4541.6271313264. The cubic root of 20626377 is about 274.2464305797.

Adding to 20626377 its reverse (77362602), we get a palindrome (97988979).

The spelling of 20626377 in words is "twenty million, six hundred twenty-six thousand, three hundred seventy-seven".