20767950 has 144 divisors (see below), whose sum is σ = 67317120. Its totient is φ = 4484160.

The previous prime is 20767939. The next prime is 20767963. The reversal of 20767950 is 5976702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 59677 + ... + 60023.

It is an arithmetic number, because the mean of its divisors is an integer number (467480).

Almost surely, 2^20767950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20767950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33658560).

20767950 is an abundant number, since it is smaller than the sum of its proper divisors (46549170).

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

20767950 is a wasteful number, since it uses less digits than its factorization.

20767950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 20767950 is about 4557.1866321229. The cubic root of 20767950 is about 274.8724477341.

The spelling of 20767950 in words is "twenty million, seven hundred sixty-seven thousand, nine hundred fifty".