44220402 has 48 divisors (see below), whose sum is σ = 99969792. Its totient is φ = 14113440.

The previous prime is 44220401. The next prime is 44220409. The reversal of 44220402 is 20402244.

44220402 is a `hidden beast` number, since 44 + 220 + 402 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (44220401) 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, 44127 + ... + 45117.

It is an arithmetic number, because the mean of its divisors is an integer number (2082704).

Almost surely, 2^44220402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44220402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49984896).

44220402 is an abundant number, since it is smaller than the sum of its proper divisors (55749390).

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

44220402 is a wasteful number, since it uses less digits than its factorization.

44220402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 44220402 is about 6649.8422537681. The cubic root of 44220402 is about 353.6233185638.

Adding to 44220402 its reverse (20402244), we get a palindrome (64622646).

The spelling of 44220402 in words is "forty-four million, two hundred twenty thousand, four hundred two".