45402020 has 48 divisors (see below), whose sum is σ = 101115840. Its totient is φ = 17076096.

The previous prime is 45402017. The next prime is 45402029. The reversal of 45402020 is 2020454.

45402020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×45402020² = 4122686840160800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45402020.

It is not an unprimeable number, because it can be changed into a prime (45402029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61574 + ... + 62306.

It is an arithmetic number, because the mean of its divisors is an integer number (2106580).

Almost surely, 2^45402020 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 45402020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50557920).

45402020 is an abundant number, since it is smaller than the sum of its proper divisors (55713820).

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

45402020 is a wasteful number, since it uses less digits than its factorization.

45402020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924 (or 922 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 45402020 is about 6738.1021066766. The cubic root of 45402020 is about 356.7454082222.

Adding to 45402020 its reverse (2020454), we get a palindrome (47422474).

The spelling of 45402020 in words is "forty-five million, four hundred two thousand, twenty".