20719704 has 32 divisors (see below), whose sum is σ = 53201520. Its totient is φ = 6719616.

The previous prime is 20719697. The next prime is 20719723. The reversal of 20719704 is 40791702.

It is a super-2 number, since 2×20719704² = 858612267695232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10779 + ... + 12554.

Almost surely, 2^20719704 is an apocalyptic number.

20719704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20719704 is an abundant number, since it is smaller than the sum of its proper divisors (32481816).

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

20719704 is a wasteful number, since it uses less digits than its factorization.

20719704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23379 (or 23375 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 20719704 is about 4551.8901568469. The cubic root of 20719704 is about 274.6594307433.

The spelling of 20719704 in words is "twenty million, seven hundred nineteen thousand, seven hundred four".