20783948 has 12 divisors (see below), whose sum is σ = 38286360. Its totient is φ = 9844992.

The previous prime is 20783941. The next prime is 20783951. The reversal of 20783948 is 84938702.

It is not an unprimeable number, because it can be changed into a prime (20783941) 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, 136661 + ... + 136812.

It is an arithmetic number, because the mean of its divisors is an integer number (3190530).

Almost surely, 2^20783948 is an apocalyptic number.

It is an amenable number.

20783948 is a deficient number, since it is larger than the sum of its proper divisors (17502412).

20783948 is a wasteful number, since it uses less digits than its factorization.

20783948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273496 (or 273494 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 20783948 is about 4558.9415438235. The cubic root of 20783948 is about 274.9430096779.

The spelling of 20783948 in words is "twenty million, seven hundred eighty-three thousand, nine hundred forty-eight".