78141432 has 16 divisors (see below), whose sum is σ = 195353640. Its totient is φ = 26047136.

The previous prime is 78141431. The next prime is 78141461. The reversal of 78141432 is 23414187.

It is a super-2 number, since 2×78141432² = 12212166790021248, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 78141432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78141431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1627923 + ... + 1627970.

Almost surely, 2^78141432 is an apocalyptic number.

It is an amenable number.

78141432 is an abundant number, since it is smaller than the sum of its proper divisors (117212208).

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

78141432 is a wasteful number, since it uses less digits than its factorization.

78141432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255902 (or 3255898 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 78141432 is about 8839.7642502501. The cubic root of 78141432 is about 427.5239561145.

The spelling of 78141432 in words is "seventy-eight million, one hundred forty-one thousand, four hundred thirty-two".