445621002 has 8 divisors (see below), whose sum is σ = 891242016. Its totient is φ = 148540332.

The previous prime is 445620991. The next prime is 445621009. The reversal of 445621002 is 200126544.

It is a sphenic number, since it is the product of 3 distinct primes.

445621002 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (445621009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37135078 + ... + 37135089.

It is an arithmetic number, because the mean of its divisors is an integer number (111405252).

Almost surely, 2^445621002 is an apocalyptic number.

445621002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

445621002 is a wasteful number, since it uses less digits than its factorization.

445621002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74270172.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 445621002 is about 21109.7371371602. The cubic root of 445621002 is about 763.8156461066.

Adding to 445621002 its reverse (200126544), we get a palindrome (645747546).

The spelling of 445621002 in words is "four hundred forty-five million, six hundred twenty-one thousand, two".