451998192 has 80 divisors (see below), whose sum is σ = 1187424000. Its totient is φ = 148141056.

The previous prime is 451998187. The next prime is 451998199. The reversal of 451998192 is 291899154.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451998199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 905559 + ... + 906057.

It is an arithmetic number, because the mean of its divisors is an integer number (14842800).

Almost surely, 2^451998192 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 451998192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (593712000).

451998192 is an abundant number, since it is smaller than the sum of its proper divisors (735425808).

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

451998192 is a wasteful number, since it uses less digits than its factorization.

451998192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 784 counting only the distinct ones).

The product of its digits is 233280, while the sum is 48.

The square root of 451998192 is about 21260.2491048435. The cubic root of 451998192 is about 767.4420046223.

The spelling of 451998192 in words is "four hundred fifty-one million, nine hundred ninety-eight thousand, one hundred ninety-two".