158226072 has 64 divisors (see below), whose sum is σ = 440899200. Its totient is φ = 47024640.

The previous prime is 158226071. The next prime is 158226073. The reversal of 158226072 is 270622851.

158226072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (158226071) and next prime (158226073).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158226071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2454 + ... + 17957.

It is an arithmetic number, because the mean of its divisors is an integer number (6889050).

Almost surely, 2^158226072 is an apocalyptic number.

158226072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158226072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220449600).

158226072 is an abundant number, since it is smaller than the sum of its proper divisors (282673128).

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

158226072 is a wasteful number, since it uses less digits than its factorization.

158226072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20456 (or 20452 counting only the distinct ones).

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

The square root of 158226072 is about 12578.7945368386. The cubic root of 158226072 is about 540.8697369746.

The spelling of 158226072 in words is "one hundred fifty-eight million, two hundred twenty-six thousand, seventy-two".