20313048 has 96 divisors (see below), whose sum is σ = 61724160. Its totient is φ = 5544000.

The previous prime is 20313047. The next prime is 20313067. The reversal of 20313048 is 84031302.

It is a happy number.

It is a Cunningham number, because it is equal to 4507²-1.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26673 + ... + 27423.

It is an arithmetic number, because the mean of its divisors is an integer number (642960).

Almost surely, 2^20313048 is an apocalyptic number.

20313048 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20313048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30862080).

20313048 is an abundant number, since it is smaller than the sum of its proper divisors (41411112).

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

20313048 is a wasteful number, since it uses less digits than its factorization.

20313048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20313048 is about 4506.9998890615. Note that the first 3 decimals coincide. The cubic root of 20313048 is about 272.8506744183.

The spelling of 20313048 in words is "twenty million, three hundred thirteen thousand, forty-eight".