40158726 has 16 divisors (see below), whose sum is σ = 85042224. Its totient is φ = 12598784.

The previous prime is 40158719. The next prime is 40158739. The reversal of 40158726 is 62785104.

It is a super-2 number, since 2×40158726² = 3225446547886152, which contains 22 as substring.

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, 196755 + ... + 196958.

It is an arithmetic number, because the mean of its divisors is an integer number (5315139).

Almost surely, 2^40158726 is an apocalyptic number.

40158726 is an abundant number, since it is smaller than the sum of its proper divisors (44883498).

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

40158726 is a wasteful number, since it uses less digits than its factorization.

40158726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393735.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 40158726 is about 6337.0912885961. The cubic root of 40158726 is about 342.4469550401.

Adding to 40158726 its product of nonzero digits (13440), we get a triangular number (40172166 = T₈₉₆₃).

It can be divided in two parts, 40 and 158726, that added together give a triangular number (158766 = T₅₆₃).

The spelling of 40158726 in words is "forty million, one hundred fifty-eight thousand, seven hundred twenty-six".