44690140 has 72 divisors (see below), whose sum is σ = 105240240. Its totient is φ = 15924480.

The previous prime is 44690137. The next prime is 44690141. The reversal of 44690140 is 4109644.

It is a super-2 number, since 2×44690140² = 3994417226439200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 44690099 and 44690108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44690141) 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, 142624 + ... + 142936.

It is an arithmetic number, because the mean of its divisors is an integer number (1461670).

Almost surely, 2^44690140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44690140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52620120).

44690140 is an abundant number, since it is smaller than the sum of its proper divisors (60550100).

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

44690140 is a wasteful number, since it uses less digits than its factorization.

44690140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 44690140 is about 6685.0684364485. The cubic root of 44690140 is about 354.8710501706.

Adding to 44690140 its reverse (4109644), we get a palindrome (48799784).

The spelling of 44690140 in words is "forty-four million, six hundred ninety thousand, one hundred forty".