32447142 has 160 divisors (see below), whose sum is σ = 93671424. Its totient is φ = 8164800.

The previous prime is 32447141. The next prime is 32447167. The reversal of 32447142 is 24174423.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32447141) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 456967 + ... + 457037.

Almost surely, 2^32447142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32447142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46835712).

32447142 is an abundant number, since it is smaller than the sum of its proper divisors (61224282).

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

32447142 is a wasteful number, since it uses less digits than its factorization.

32447142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 127 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 32447142 is about 5696.2392857042. The cubic root of 32447142 is about 318.9521126480.

The spelling of 32447142 in words is "thirty-two million, four hundred forty-seven thousand, one hundred forty-two".