20550374 has 32 divisors (see below), whose sum is σ = 34546176. Its totient is φ = 9108000.

The previous prime is 20550347. The next prime is 20550377. The reversal of 20550374 is 47305502.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20550377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81749 + ... + 81999.

It is an arithmetic number, because the mean of its divisors is an integer number (1079568).

Almost surely, 2^20550374 is an apocalyptic number.

20550374 is a deficient number, since it is larger than the sum of its proper divisors (13995802).

20550374 is a wasteful number, since it uses less digits than its factorization.

20550374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 20550374 is about 4533.2520335847. The cubic root of 20550374 is about 273.9091730141.

Adding to 20550374 its reverse (47305502), we get a palindrome (67855876).

The spelling of 20550374 in words is "twenty million, five hundred fifty thousand, three hundred seventy-four".