158435478 has 48 divisors (see below), whose sum is σ = 371953296. Its totient is φ = 48545280.

The previous prime is 158435447. The next prime is 158435489. The reversal of 158435478 is 874534851.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7138 + ... + 19178.

It is an arithmetic number, because the mean of its divisors is an integer number (7749027).

Almost surely, 2^158435478 is an apocalyptic number.

158435478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 158435478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185976648).

158435478 is an abundant number, since it is smaller than the sum of its proper divisors (213517818).

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

158435478 is a wasteful number, since it uses less digits than its factorization.

158435478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12109 (or 12106 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 158435478 is about 12587.1155552017. The cubic root of 158435478 is about 541.1082384170.

It can be divided in two parts, 15843 and 5478, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 158435478 in words is "one hundred fifty-eight million, four hundred thirty-five thousand, four hundred seventy-eight".