20349080 has 16 divisors (see below), whose sum is σ = 45785520. Its totient is φ = 8139616.

The previous prime is 20349061. The next prime is 20349103. The reversal of 20349080 is 8094302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254324 + ... + 254403.

It is an arithmetic number, because the mean of its divisors is an integer number (2861595).

Almost surely, 2^20349080 is an apocalyptic number.

20349080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20349080 is an abundant number, since it is smaller than the sum of its proper divisors (25436440).

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

20349080 is a wasteful number, since it uses less digits than its factorization.

20349080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508738 (or 508734 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20349080 is about 4510.9954555508. The cubic root of 20349080 is about 273.0119098330.

The spelling of 20349080 in words is "twenty million, three hundred forty-nine thousand, eighty".