20348040 has 32 divisors (see below), whose sum is σ = 61044480. Its totient is φ = 5426112.

The previous prime is 20348033. The next prime is 20348051. The reversal of 20348040 is 4084302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20347998 and 20348016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84664 + ... + 84903.

It is an arithmetic number, because the mean of its divisors is an integer number (1907640).

Almost surely, 2^20348040 is an apocalyptic number.

20348040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20348040 is an abundant number, since it is smaller than the sum of its proper divisors (40696440).

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

20348040 is a wasteful number, since it uses less digits than its factorization.

20348040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169581 (or 169577 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 20348040 is about 4510.8801801866. The cubic root of 20348040 is about 273.0072587263.

The spelling of 20348040 in words is "twenty million, three hundred forty-eight thousand, forty".