20406702 has 8 divisors (see below), whose sum is σ = 40813416. Its totient is φ = 6802232.

The previous prime is 20406697. The next prime is 20406767. The reversal of 20406702 is 20760402.

It is a happy number.

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

20406702 is an admirable number.

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, 1700553 + ... + 1700564.

It is an arithmetic number, because the mean of its divisors is an integer number (5101677).

Almost surely, 2^20406702 is an apocalyptic number.

20406702 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20406702 is a wasteful number, since it uses less digits than its factorization.

20406702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3401122.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20406702 is about 4517.3777791989. The cubic root of 20406702 is about 273.2693607309.

The spelling of 20406702 in words is "twenty million, four hundred six thousand, seven hundred two".