164280040 has 32 divisors (see below), whose sum is σ = 377498880. Its totient is φ = 64313152.

The previous prime is 164280029. The next prime is 164280043. The reversal of 164280040 is 40082461.

It is a junction number, because it is equal to n+sod(n) for n = 164279987 and 164280014.

It is not an unprimeable number, because it can be changed into a prime (164280043) 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, 41812 + ... + 45571.

It is an arithmetic number, because the mean of its divisors is an integer number (11796840).

Almost surely, 2^164280040 is an apocalyptic number.

164280040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164280040 is an abundant number, since it is smaller than the sum of its proper divisors (213218840).

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

164280040 is a wasteful number, since it uses less digits than its factorization.

164280040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87441 (or 87437 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 164280040 is about 12817.1775364157. The cubic root of 164280040 is about 547.6817464071.

The spelling of 164280040 in words is "one hundred sixty-four million, two hundred eighty thousand, forty".