20293490 has 32 divisors (see below), whose sum is σ = 41955840. Its totient is φ = 6922944.

The previous prime is 20293487. The next prime is 20293523. The reversal of 20293490 is 9439202.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16124 + ... + 17336.

It is an arithmetic number, because the mean of its divisors is an integer number (1311120).

Almost surely, 2^20293490 is an apocalyptic number.

20293490 is an abundant number, since it is smaller than the sum of its proper divisors (21662350).

20293490 is a wasteful number, since it uses less digits than its factorization.

20293490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 20293490 is about 4504.8296305188. The cubic root of 20293490 is about 272.7630767472.

It can be divided in two parts, 20293 and 490, that multiplied together give a triangular number (9943570 = T₄₄₅₉).

The spelling of 20293490 in words is "twenty million, two hundred ninety-three thousand, four hundred ninety".