20761748 has 12 divisors (see below), whose sum is σ = 41523552. Its totient is φ = 8897880.

The previous prime is 20761747. The next prime is 20761757. The reversal of 20761748 is 84716702.

It is a happy number.

20761748 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20761747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370718 + ... + 370773.

It is an arithmetic number, because the mean of its divisors is an integer number (3460296).

Almost surely, 2^20761748 is an apocalyptic number.

20761748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20761748 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.

20761748 is a wasteful number, since it uses less digits than its factorization.

20761748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741502 (or 741500 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 20761748 is about 4556.5061176300. The cubic root of 20761748 is about 274.8450829942.

The spelling of 20761748 in words is "twenty million, seven hundred sixty-one thousand, seven hundred forty-eight".