64254378 has 16 divisors (see below), whose sum is σ = 128848896. Its totient is φ = 21361440.

The previous prime is 64254349. The next prime is 64254389. The reversal of 64254378 is 87345246.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11683 + ... + 16278.

It is an arithmetic number, because the mean of its divisors is an integer number (8053056).

Almost surely, 2^64254378 is an apocalyptic number.

64254378 is an abundant number, since it is smaller than the sum of its proper divisors (64594518).

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

64254378 is a wasteful number, since it uses less digits than its factorization.

64254378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28349.

The product of its digits is 161280, while the sum is 39.

The square root of 64254378 is about 8015.8828584255. The cubic root of 64254378 is about 400.5292535844.

The spelling of 64254378 in words is "sixty-four million, two hundred fifty-four thousand, three hundred seventy-eight".