227197980 has 48 divisors (see below), whose sum is σ = 706839840. Its totient is φ = 60585984.

The previous prime is 227197961. The next prime is 227197981. The reversal of 227197980 is 89791722.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227197981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209829 + ... + 210908.

It is an arithmetic number, because the mean of its divisors is an integer number (14725830).

Almost surely, 2^227197980 is an apocalyptic number.

227197980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227197980 is an abundant number, since it is smaller than the sum of its proper divisors (479641860).

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

227197980 is a wasteful number, since it uses less digits than its factorization.

227197980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420755 (or 420747 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 227197980 is about 15073.0879384418. The cubic root of 227197980 is about 610.1943123684.

The spelling of 227197980 in words is "two hundred twenty-seven million, one hundred ninety-seven thousand, nine hundred eighty".