20803470 has 32 divisors (see below), whose sum is σ = 50200992. Its totient is φ = 5517312.

The previous prime is 20803417. The next prime is 20803487. The reversal of 20803470 is 7430802.

It is a self number, because there is not a number n which added to its sum of digits gives 20803470.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3994 + ... + 7586.

It is an arithmetic number, because the mean of its divisors is an integer number (1568781).

Almost surely, 2^20803470 is an apocalyptic number.

20803470 is an abundant number, since it is smaller than the sum of its proper divisors (29397522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20803470 is a wasteful number, since it uses less digits than its factorization.

20803470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20803470 is about 4561.0821084475. The cubic root of 20803470 is about 275.0290657983.

The spelling of 20803470 in words is "twenty million, eight hundred three thousand, four hundred seventy".