78414531 has 32 divisors (see below), whose sum is σ = 117841920. Its totient is φ = 46051200.

The previous prime is 78414529. The next prime is 78414533. The reversal of 78414531 is 13541487.

It is an interprime number because it is at equal distance from previous prime (78414529) and next prime (78414533).

It is not a de Polignac number, because 78414531 - 2¹ = 78414529 is a prime.

It is a super-2 number, since 2×78414531² = 12297677343899922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78414492 and 78414501.

It is not an unprimeable number, because it can be changed into a prime (78414533) 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 31 ways as a sum of consecutive naturals, for example, 95101 + ... + 95921.

It is an arithmetic number, because the mean of its divisors is an integer number (3682560).

Almost surely, 2^78414531 is an apocalyptic number.

78414531 is a deficient number, since it is larger than the sum of its proper divisors (39427389).

78414531 is a wasteful number, since it uses less digits than its factorization.

78414531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947.

The product of its digits is 13440, while the sum is 33.

The square root of 78414531 is about 8855.1979650373. The cubic root of 78414531 is about 428.0214327492.

The spelling of 78414531 in words is "seventy-eight million, four hundred fourteen thousand, five hundred thirty-one".