20807354 has 16 divisors (see below), whose sum is σ = 33136128. Its totient is φ = 9765312.

The previous prime is 20807329. The next prime is 20807359. The reversal of 20807354 is 45370802.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20807359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18599 + ... + 19685.

It is an arithmetic number, because the mean of its divisors is an integer number (2071008).

Almost surely, 2^20807354 is an apocalyptic number.

20807354 is a deficient number, since it is larger than the sum of its proper divisors (12328774).

20807354 is a wasteful number, since it uses less digits than its factorization.

20807354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669.

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

The square root of 20807354 is about 4561.5078647307. The cubic root of 20807354 is about 275.0461806742.

The spelling of 20807354 in words is "twenty million, eight hundred seven thousand, three hundred fifty-four".