163290340 has 24 divisors (see below), whose sum is σ = 357819840. Its totient is φ = 62476128.

The previous prime is 163290319. The next prime is 163290341. The reversal of 163290340 is 43092361.

It is a junction number, because it is equal to n+sod(n) for n = 163290299 and 163290308.

It is not an unprimeable number, because it can be changed into a prime (163290341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177030 + ... + 177949.

It is an arithmetic number, because the mean of its divisors is an integer number (14909160).

Almost surely, 2^163290340 is an apocalyptic number.

163290340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163290340 is an abundant number, since it is smaller than the sum of its proper divisors (194529500).

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

163290340 is a wasteful number, since it uses less digits than its factorization.

163290340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355011 (or 355009 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 163290340 is about 12778.5108678594. The cubic root of 163290340 is about 546.5796997950.

The spelling of 163290340 in words is "one hundred sixty-three million, two hundred ninety thousand, three hundred forty".