20493130 has 16 divisors (see below), whose sum is σ = 42157440. Its totient is φ = 7026192.

The previous prime is 20493113. The next prime is 20493131. The reversal of 20493130 is 3139402.

It is not an unprimeable number, because it can be changed into a prime (20493131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146310 + ... + 146449.

It is an arithmetic number, because the mean of its divisors is an integer number (2634840).

Almost surely, 2^20493130 is an apocalyptic number.

20493130 is an abundant number, since it is smaller than the sum of its proper divisors (21664310).

20493130 is a wasteful number, since it uses less digits than its factorization.

20493130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292773.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 20493130 is about 4526.9338409126. The cubic root of 20493130 is about 273.6546076865.

The spelling of 20493130 in words is "twenty million, four hundred ninety-three thousand, one hundred thirty".