20507948 has 6 divisors (see below), whose sum is σ = 35888916. Its totient is φ = 10253972.

The previous prime is 20507911. The next prime is 20507969. The reversal of 20507948 is 84970502.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2563490 + ... + 2563497.

It is an arithmetic number, because the mean of its divisors is an integer number (5981486).

Almost surely, 2^20507948 is an apocalyptic number.

It is an amenable number.

20507948 is a deficient number, since it is larger than the sum of its proper divisors (15380968).

20507948 is a wasteful number, since it uses less digits than its factorization.

20507948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5126991 (or 5126989 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 20507948 is about 4528.5701937808. The cubic root of 20507948 is about 273.7205490860.

The spelling of 20507948 in words is "twenty million, five hundred seven thousand, nine hundred forty-eight".