45920644 has 108 divisors (see below), whose sum is σ = 109453680. Its totient is φ = 16662240.

The previous prime is 45920639. The next prime is 45920647. The reversal of 45920644 is 44602954.

It is not an unprimeable number, because it can be changed into a prime (45920647) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 778287 + ... + 778345.

It is an arithmetic number, because the mean of its divisors is an integer number (1013460).

Almost surely, 2^45920644 is an apocalyptic number.

45920644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45920644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54726840).

45920644 is an abundant number, since it is smaller than the sum of its proper divisors (63533036).

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

45920644 is a wasteful number, since it uses less digits than its factorization.

45920644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 45920644 is about 6776.4772559199. The cubic root of 45920644 is about 358.0986276744.

It can be divided in two parts, 45920 and 644, that added together give a palindrome (46564).

The spelling of 45920644 in words is "forty-five million, nine hundred twenty thousand, six hundred forty-four".