8121432 has 32 divisors (see below), whose sum is σ = 22150080. Its totient is φ = 2460960.

The previous prime is 8121431. The next prime is 8121433. The reversal of 8121432 is 2341218.

It is an interprime number because it is at equal distance from previous prime (8121431) and next prime (8121433).

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 8121399 and 8121408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8121431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15118 + ... + 15645.

It is an arithmetic number, because the mean of its divisors is an integer number (692190).

Almost surely, 2^8121432 is an apocalyptic number.

It is an amenable number.

8121432 is an abundant number, since it is smaller than the sum of its proper divisors (14028648).

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

8121432 is a wasteful number, since it uses less digits than its factorization.

8121432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30783 (or 30779 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 8121432 is about 2849.8126254194. The cubic root of 8121432 is about 201.0068560321.

The spelling of 8121432 in words is "eight million, one hundred twenty-one thousand, four hundred thirty-two".