20650716 has 72 divisors (see below), whose sum is σ = 56687904. Its totient is φ = 6312960.

The previous prime is 20650691. The next prime is 20650753. The reversal of 20650716 is 61705602.

20650716 = 28³ + 29³ + ... + 95³.

20650716 is a `hidden beast` number, since 2 + 0 + 650 + 7 + 1 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20650716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24681 + ... + 25503.

It is an arithmetic number, because the mean of its divisors is an integer number (787332).

Almost surely, 2^20650716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20650716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28343952).

20650716 is an abundant number, since it is smaller than the sum of its proper divisors (36037188).

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

20650716 is a wasteful number, since it uses less digits than its factorization.

20650716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20650716 is about 4544.3058875916. The cubic root of 20650716 is about 274.3542578882.

The spelling of 20650716 in words is "twenty million, six hundred fifty thousand, seven hundred sixteen".