421617272 has 16 divisors (see below), whose sum is σ = 837034560. Its totient is φ = 198408064.

The previous prime is 421617269. The next prime is 421617293. The reversal of 421617272 is 272716124.

It is a super-2 number, since 2×421617272² = 355522248097443968, 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 3 ways as a sum of consecutive naturals, for example, 1549928 + ... + 1550199.

It is an arithmetic number, because the mean of its divisors is an integer number (52314660).

Almost surely, 2^421617272 is an apocalyptic number.

It is an amenable number.

421617272 is a deficient number, since it is larger than the sum of its proper divisors (415417288).

421617272 is a wasteful number, since it uses less digits than its factorization.

421617272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100150 (or 3100146 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

The square root of 421617272 is about 20533.3210173123. The cubic root of 421617272 is about 749.8472411847.

The spelling of 421617272 in words is "four hundred twenty-one million, six hundred seventeen thousand, two hundred seventy-two".