44021400 has 48 divisors (see below), whose sum is σ = 136468200. Its totient is φ = 11738880.

The previous prime is 44021317. The next prime is 44021401. The reversal of 44021400 is 412044.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 44021400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44021401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36085 + ... + 37284.

Almost surely, 2^44021400 is an apocalyptic number.

44021400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44021400 is an abundant number, since it is smaller than the sum of its proper divisors (92446800).

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

44021400 is a wasteful number, since it uses less digits than its factorization.

44021400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73388 (or 73379 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 44021400 is about 6634.8624703154. The cubic root of 44021400 is about 353.0920586913.

Adding to 44021400 its reverse (412044), we get a palindrome (44433444).

The spelling of 44021400 in words is "forty-four million, twenty-one thousand, four hundred".