64489242 has 32 divisors (see below), whose sum is σ = 133171200. Its totient is φ = 20809008.

The previous prime is 64489241. The next prime is 64489247. The reversal of 64489242 is 24298446.

It is a self number, because there is not a number n which added to its sum of digits gives 64489242.

It is not an unprimeable number, because it can be changed into a prime (64489241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22359 + ... + 25077.

It is an arithmetic number, because the mean of its divisors is an integer number (4161600).

Almost surely, 2^64489242 is an apocalyptic number.

64489242 is an abundant number, since it is smaller than the sum of its proper divisors (68681958).

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

64489242 is a wasteful number, since it uses less digits than its factorization.

64489242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850.

The product of its digits is 110592, while the sum is 39.

The square root of 64489242 is about 8030.5194103495. The cubic root of 64489242 is about 401.0166679431.

The spelling of 64489242 in words is "sixty-four million, four hundred eighty-nine thousand, two hundred forty-two".