272221400 has 48 divisors (see below), whose sum is σ = 690458040. Its totient is φ = 98988800.

The previous prime is 272221393. The next prime is 272221403. The reversal of 272221400 is 4122272.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272221403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59669 + ... + 64068.

Almost surely, 2^272221400 is an apocalyptic number.

272221400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

272221400 is an abundant number, since it is smaller than the sum of its proper divisors (418236640).

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

272221400 is a wasteful number, since it uses less digits than its factorization.

272221400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123764 (or 123755 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 272221400 is about 16499.1333105712. The cubic root of 272221400 is about 648.0981091609.

Adding to 272221400 its reverse (4122272), we get a palindrome (276343672).

The spelling of 272221400 in words is "two hundred seventy-two million, two hundred twenty-one thousand, four hundred".