93213840 has 40 divisors (see below), whose sum is σ = 288963648. Its totient is φ = 24856960.

The previous prime is 93213823. The next prime is 93213847. The reversal of 93213840 is 4831239.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 93213798 and 93213807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93213847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193956 + ... + 194435.

Almost surely, 2^93213840 is an apocalyptic number.

It is an amenable number.

93213840 is an abundant number, since it is smaller than the sum of its proper divisors (195749808).

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

93213840 is a wasteful number, since it uses less digits than its factorization.

93213840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388407 (or 388401 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 93213840 is about 9654.7314825426. The cubic root of 93213840 is about 453.4124765706.

The spelling of 93213840 in words is "ninety-three million, two hundred thirteen thousand, eight hundred forty".