7278201 has 32 divisors (see below), whose sum is σ = 12481280. Its totient is φ = 4105728.

The previous prime is 7278199. The next prime is 7278209. The reversal of 7278201 is 1028727.

It is not a de Polignac number, because 7278201 - 2¹ = 7278199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (7278209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18135 + ... + 18531.

It is an arithmetic number, because the mean of its divisors is an integer number (390040).

Almost surely, 2^7278201 is an apocalyptic number.

It is an amenable number.

7278201 is a deficient number, since it is larger than the sum of its proper divisors (5203079).

7278201 is a wasteful number, since it uses less digits than its factorization.

7278201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 7278201 is about 2697.8141151681. The cubic root of 7278201 is about 193.7944558412.

It can be divided in two parts, 727820 and 1, that added together give a triangular number (727821 = T₁₂₀₆).

The spelling of 7278201 in words is "seven million, two hundred seventy-eight thousand, two hundred one".