209227480 has 64 divisors (see below), whose sum is σ = 586932480. Its totient is φ = 65212800.

The previous prime is 209227477. The next prime is 209227537. The reversal of 209227480 is 84722902.

209227480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×209227480² = 87552276774300800, which contains 22 as substring.

It is a congruent 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, 30886 + ... + 37045.

It is an arithmetic number, because the mean of its divisors is an integer number (9170820).

Almost surely, 2^209227480 is an apocalyptic number.

209227480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

209227480 is an abundant number, since it is smaller than the sum of its proper divisors (377705000).

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

209227480 is a wasteful number, since it uses less digits than its factorization.

209227480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67960 (or 67956 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 209227480 is about 14464.6977154727. The cubic root of 209227480 is about 593.6624427862.

The spelling of 209227480 in words is "two hundred nine million, two hundred twenty-seven thousand, four hundred eighty".