158222400 has 336 divisors, whose sum is σ = 630423936. Its totient is φ = 33914880.

The previous prime is 158222381. The next prime is 158222401. The reversal of 158222400 is 4222851.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (158222401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 571062 + ... + 571338.

Almost surely, 2^158222400 is an apocalyptic number.

158222400 is a gapful number since it is divisible by the number (10) 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 158222400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315211968).

158222400 is an abundant number, since it is smaller than the sum of its proper divisors (472201536).

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

158222400 is a wasteful number, since it uses less digits than its factorization.

158222400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 158222400 is about 12578.6485760594. The cubic root of 158222400 is about 540.8655529001.

The spelling of 158222400 in words is "one hundred fifty-eight million, two hundred twenty-two thousand, four hundred".