397548726 has 32 divisors (see below), whose sum is σ = 816652800. Its totient is φ = 128968800.

The previous prime is 397548719. The next prime is 397548727. The reversal of 397548726 is 627845793.

It is a super-4 number, since 4×397548726⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397548727) 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, 30195 + ... + 41313.

It is an arithmetic number, because the mean of its divisors is an integer number (25520400).

Almost surely, 2^397548726 is an apocalyptic number.

397548726 is an abundant number, since it is smaller than the sum of its proper divisors (419104074).

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

397548726 is a wasteful number, since it uses less digits than its factorization.

397548726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11284.

The product of its digits is 2540160, while the sum is 51.

The square root of 397548726 is about 19938.6239745876. The cubic root of 397548726 is about 735.2981196128.

The spelling of 397548726 in words is "three hundred ninety-seven million, five hundred forty-eight thousand, seven hundred twenty-six".