20279020 has 24 divisors (see below), whose sum is σ = 43188768. Its totient is φ = 7996800.

The previous prime is 20279009. The next prime is 20279029. The reversal of 20279020 is 2097202.

It is a super-2 number, since 2×20279020² = 822477304320800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20278982 and 20279000.

It is not an unprimeable number, because it can be changed into a prime (20279029) 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, 5721 + ... + 8560.

It is an arithmetic number, because the mean of its divisors is an integer number (1799532).

Almost surely, 2^20279020 is an apocalyptic number.

20279020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20279020 is an abundant number, since it is smaller than the sum of its proper divisors (22909748).

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

20279020 is a wasteful number, since it uses less digits than its factorization.

20279020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14361 (or 14359 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 20279020 is about 4503.2232900446. The cubic root of 20279020 is about 272.6982313184.

The spelling of 20279020 in words is "twenty million, two hundred seventy-nine thousand, twenty".