9426723840 has 704 divisors, whose sum is σ = 36590534400. Its totient is φ = 2293235712.

The previous prime is 9426723751. The next prime is 9426723851. The reversal of 9426723840 is 483276249.

9426723840 is a `hidden beast` number, since 9 + 4 + 267 + 2 + 384 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 97182672 + ... + 97182768.

Almost surely, 2^9426723840 is an apocalyptic number.

9426723840 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 9426723840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18295267200).

9426723840 is an abundant number, since it is smaller than the sum of its proper divisors (27163810560).

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

9426723840 is a wasteful number, since it uses less digits than its factorization.

9426723840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 9426723840 is about 97091.3170165077. The cubic root of 9426723840 is about 2112.4523824333.

The spelling of 9426723840 in words is "nine billion, four hundred twenty-six million, seven hundred twenty-three thousand, eight hundred forty".