164020726 has 16 divisors (see below), whose sum is σ = 262171296. Its totient is φ = 76692096.

The previous prime is 164020697. The next prime is 164020733. The reversal of 164020726 is 627020461.

It is a junction number, because it is equal to n+sod(n) for n = 164020694 and 164020703.

It is a congruent number.

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, 10026 + ... + 20701.

It is an arithmetic number, because the mean of its divisors is an integer number (16385706).

Almost surely, 2^164020726 is an apocalyptic number.

164020726 is a deficient number, since it is larger than the sum of its proper divisors (98150570).

164020726 is a wasteful number, since it uses less digits than its factorization.

164020726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30903.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 164020726 is about 12807.0576636478. The cubic root of 164020726 is about 547.3934250415.

It can be divided in two parts, 1640 and 20726, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 164020726 in words is "one hundred sixty-four million, twenty thousand, seven hundred twenty-six".