397062240 has 48 divisors (see below), whose sum is σ = 1250747568. Its totient is φ = 105883136.

The previous prime is 397062233. The next prime is 397062269. The reversal of 397062240 is 42260793.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413127 + ... + 414086.

It is an arithmetic number, because the mean of its divisors is an integer number (26057241).

Almost surely, 2^397062240 is an apocalyptic number.

397062240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

397062240 is an abundant number, since it is smaller than the sum of its proper divisors (853685328).

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

397062240 is a wasteful number, since it uses less digits than its factorization.

397062240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827231 (or 827223 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 397062240 is about 19926.4206519887. The cubic root of 397062240 is about 734.9980656157.

The spelling of 397062240 in words is "three hundred ninety-seven million, sixty-two thousand, two hundred forty".