166247040 has 64 divisors (see below), whose sum is σ = 529918560. Its totient is φ = 44332032.

The previous prime is 166247023. The next prime is 166247099. The reversal of 166247040 is 40742661.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 166246989 and 166247007.

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, 41374 + ... + 45213.

Almost surely, 2^166247040 is an apocalyptic number.

166247040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166247040 is an abundant number, since it is smaller than the sum of its proper divisors (363671520).

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

166247040 is an equidigital number, since it uses as much as digits as its factorization.

166247040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86609 (or 86597 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 166247040 is about 12893.6821738400. The cubic root of 166247040 is about 549.8589610810.

The spelling of 166247040 in words is "one hundred sixty-six million, two hundred forty-seven thousand, forty".