83642454 has 48 divisors (see below), whose sum is σ = 208785408. Its totient is φ = 23705136.

The previous prime is 83642441. The next prime is 83642509. The reversal of 83642454 is 45424638.

83642454 is a `hidden beast` number, since 8 + 3 + 642 + 4 + 5 + 4 = 666.

It is a super-2 number, since 2×83642454² = 13992120222284232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13389 + ... + 18615.

It is an arithmetic number, because the mean of its divisors is an integer number (4349696).

Almost surely, 2^83642454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83642454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104392704).

83642454 is an abundant number, since it is smaller than the sum of its proper divisors (125142954).

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

83642454 is a wasteful number, since it uses less digits than its factorization.

83642454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5369 (or 5366 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 83642454 is about 9145.6248556345. The cubic root of 83642454 is about 437.3296494883.

The spelling of 83642454 in words is "eighty-three million, six hundred forty-two thousand, four hundred fifty-four".