90843260400 has 240 divisors, whose sum is σ = 342355096800. Its totient is φ = 22799831040.

The previous prime is 90843260381. The next prime is 90843260407. The reversal of 90843260400 is 406234809.

It is a happy number.

90843260400 is a `hidden beast` number, since 9 + 0 + 8 + 43 + 2 + 604 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90843260407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63795 + ... + 430994.

It is an arithmetic number, because the mean of its divisors is an integer number (1426479570).

Almost surely, 2^90843260400 is an apocalyptic number.

90843260400 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90843260400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171177548400).

90843260400 is an abundant number, since it is smaller than the sum of its proper divisors (251511836400).

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

90843260400 is a wasteful number, since it uses less digits than its factorization.

90843260400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494833 (or 494816 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 90843260400 in words is "ninety billion, eight hundred forty-three million, two hundred sixty thousand, four hundred".