1423620450 has 288 divisors, whose sum is σ = 4569207552. Its totient is φ = 311040000.

The previous prime is 1423620433. The next prime is 1423620461. The reversal of 1423620450 is 540263241.

1423620450 is a `hidden beast` number, since 14 + 23 + 620 + 4 + 5 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 9427875 + ... + 9428025.

It is an arithmetic number, because the mean of its divisors is an integer number (15865304).

Almost surely, 2^1423620450 is an apocalyptic number.

1423620450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1423620450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2284603776).

1423620450 is an abundant number, since it is smaller than the sum of its proper divisors (3145587102).

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

1423620450 is a wasteful number, since it uses less digits than its factorization.

1423620450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1423620450 is about 37730.8951656332. The cubic root of 1423620450 is about 1124.9453010442.

Adding to 1423620450 its reverse (540263241), we get a palindrome (1963883691).

The spelling of 1423620450 in words is "one billion, four hundred twenty-three million, six hundred twenty thousand, four hundred fifty".