220673540 has 12 divisors (see below), whose sum is σ = 463414476. Its totient is φ = 88269408.

The previous prime is 220673533. The next prime is 220673591. The reversal of 220673540 is 45376022.

It can be written as a sum of positive squares in 2 ways, for example, as 52504516 + 168169024 = 7246^2 + 12968^2 .

It is a super-2 number, since 2×220673540² = 97393622512263200, 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, 5516819 + ... + 5516858.

It is an arithmetic number, because the mean of its divisors is an integer number (38617873).

Almost surely, 2^220673540 is an apocalyptic number.

220673540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220673540 is an abundant number, since it is smaller than the sum of its proper divisors (242740936).

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

220673540 is a wasteful number, since it uses less digits than its factorization.

220673540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11033686 (or 11033684 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 220673540 is about 14855.0846513913. The cubic root of 220673540 is about 604.2965117249.

The spelling of 220673540 in words is "two hundred twenty million, six hundred seventy-three thousand, five hundred forty".