163247980 has 24 divisors (see below), whose sum is σ = 391795488. Its totient is φ = 55970688.

The previous prime is 163247963. The next prime is 163247999. The reversal of 163247980 is 89742361.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582889 + ... + 583168.

It is an arithmetic number, because the mean of its divisors is an integer number (16324812).

Almost surely, 2^163247980 is an apocalyptic number.

163247980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163247980 is an abundant number, since it is smaller than the sum of its proper divisors (228547508).

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

163247980 is a wasteful number, since it uses less digits than its factorization.

163247980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166073 (or 1166071 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 163247980 is about 12776.8532902276. The cubic root of 163247980 is about 546.5324320092.

The spelling of 163247980 in words is "one hundred sixty-three million, two hundred forty-seven thousand, nine hundred eighty".