20431702 has 8 divisors (see below), whose sum is σ = 30669912. Its totient is φ = 10208400.

The previous prime is 20431687. The next prime is 20431721. The reversal of 20431702 is 20713402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20431702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 802 + ... + 6442.

It is an arithmetic number, because the mean of its divisors is an integer number (3833739).

Almost surely, 2^20431702 is an apocalyptic number.

20431702 is a deficient number, since it is larger than the sum of its proper divisors (10238210).

20431702 is a wasteful number, since it uses less digits than its factorization.

20431702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7454.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20431702 is about 4520.1440242541. The cubic root of 20431702 is about 273.3809081708.

The spelling of 20431702 in words is "twenty million, four hundred thirty-one thousand, seven hundred two".