163797270 has 64 divisors (see below), whose sum is σ = 483840000. Its totient is φ = 34558848.

The previous prime is 163797269. The next prime is 163797281. The reversal of 163797270 is 72797361.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 31 ways as a sum of consecutive naturals, for example, 27270 + ... + 32729.

It is an arithmetic number, because the mean of its divisors is an integer number (7560000).

Almost surely, 2^163797270 is an apocalyptic number.

163797270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163797270 is an abundant number, since it is smaller than the sum of its proper divisors (320042730).

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

163797270 is a wasteful number, since it uses less digits than its factorization.

163797270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60029.

The product of its (nonzero) digits is 111132, while the sum is 42.

The square root of 163797270 is about 12798.3307505315. The cubic root of 163797270 is about 547.1447289618.

Subtracting from 163797270 its reverse (72797361), we obtain a palindrome (90999909).

The spelling of 163797270 in words is "one hundred sixty-three million, seven hundred ninety-seven thousand, two hundred seventy".