20090738 has 16 divisors (see below), whose sum is σ = 30996000. Its totient is φ = 9760800.

The previous prime is 20090729. The next prime is 20090743. The reversal of 20090738 is 83709002.

It is a self number, because there is not a number n which added to its sum of digits gives 20090738.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 40013 + ... + 40511.

It is an arithmetic number, because the mean of its divisors is an integer number (1937250).

Almost surely, 2^20090738 is an apocalyptic number.

20090738 is a deficient number, since it is larger than the sum of its proper divisors (10905262).

20090738 is a wasteful number, since it uses less digits than its factorization.

20090738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20090738 is about 4482.2692913300. The cubic root of 20090738 is about 271.8516437944.

It can be divided in two parts, 200 and 90738, that multiplied together give a square (18147600 = 4260²).

The spelling of 20090738 in words is "twenty million, ninety thousand, seven hundred thirty-eight".