451620378 has 24 divisors (see below), whose sum is σ = 1067466816. Its totient is φ = 136854600.

The previous prime is 451620373. The next prime is 451620439. The reversal of 451620378 is 873026154.

It is not an unprimeable number, because it can be changed into a prime (451620373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1140258 + ... + 1140653.

It is an arithmetic number, because the mean of its divisors is an integer number (44477784).

Almost surely, 2^451620378 is an apocalyptic number.

451620378 is an abundant number, since it is smaller than the sum of its proper divisors (615846438).

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

451620378 is a wasteful number, since it uses less digits than its factorization.

451620378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280930 (or 2280927 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 451620378 is about 21251.3617916594. The cubic root of 451620378 is about 767.2281164817.

The spelling of 451620378 in words is "four hundred fifty-one million, six hundred twenty thousand, three hundred seventy-eight".