64154442 has 48 divisors (see below), whose sum is σ = 142644096. Its totient is φ = 19219200.

The previous prime is 64154423. The next prime is 64154449. The reversal of 64154442 is 24445146.

It is a happy number.

Its product of digits (15360) is a multiple of the sum of its prime divisors (1024).

It is not an unprimeable number, because it can be changed into a prime (64154449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69967 + ... + 70877.

It is an arithmetic number, because the mean of its divisors is an integer number (2971752).

Almost surely, 2^64154442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64154442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71322048).

64154442 is an abundant number, since it is smaller than the sum of its proper divisors (78489654).

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

64154442 is a wasteful number, since it uses less digits than its factorization.

64154442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1024 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 64154442 is about 8009.6468086926. The cubic root of 64154442 is about 400.3214956987.

Adding to 64154442 its reverse (24445146), we get a palindrome (88599588).

The spelling of 64154442 in words is "sixty-four million, one hundred fifty-four thousand, four hundred forty-two".