402332454 has 64 divisors (see below), whose sum is σ = 922798080. Its totient is φ = 129872160.

The previous prime is 402332453. The next prime is 402332461. The reversal of 402332454 is 454233204.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402332453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219787 + ... + 221609.

It is an arithmetic number, because the mean of its divisors is an integer number (14418720).

Almost surely, 2^402332454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402332454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461399040).

402332454 is an abundant number, since it is smaller than the sum of its proper divisors (520465626).

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

402332454 is a wasteful number, since it uses less digits than its factorization.

402332454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962 (or 1956 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 402332454 is about 20058.2265916008. The cubic root of 402332454 is about 738.2356640465.

Adding to 402332454 its reverse (454233204), we get a palindrome (856565658).

The spelling of 402332454 in words is "four hundred two million, three hundred thirty-two thousand, four hundred fifty-four".