45423400 has 72 divisors (see below), whose sum is σ = 116144910. Its totient is φ = 16508800.

The previous prime is 45423379. The next prime is 45423407. The reversal of 45423400 is 432454.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 36072036 + 9351364 = 6006^2 + 3058^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (45423407) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23262 + ... + 25138.

Almost surely, 2^45423400 is an apocalyptic number.

45423400 is a gapful number since it is divisible by the number (40) 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 45423400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58072455).

45423400 is an abundant number, since it is smaller than the sum of its proper divisors (70721510).

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

45423400 is a wasteful number, since it uses less digits than its factorization.

45423400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1895 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 45423400 is about 6739.6884200978. The cubic root of 45423400 is about 356.8013970667.

Adding to 45423400 its reverse (432454), we get a palindrome (45855854).

The spelling of 45423400 in words is "forty-five million, four hundred twenty-three thousand, four hundred".