20284492 has 12 divisors (see below), whose sum is σ = 35559720. Its totient is φ = 10124576.

The previous prime is 20284471. The next prime is 20284501. The reversal of 20284492 is 29448202.

It is a super-2 number, since 2×20284492² = 822921231396128, which contains 22 as substring.

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, 1642 + ... + 6577.

It is an arithmetic number, because the mean of its divisors is an integer number (2963310).

Almost surely, 2^20284492 is an apocalyptic number.

It is an amenable number.

20284492 is a deficient number, since it is larger than the sum of its proper divisors (15275228).

20284492 is a wasteful number, since it uses less digits than its factorization.

20284492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8840 (or 8838 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 20284492 is about 4503.8308138739. The cubic root of 20284492 is about 272.7227570027.

The spelling of 20284492 in words is "twenty million, two hundred eighty-four thousand, four hundred ninety-two".