78414530 has 32 divisors (see below), whose sum is σ = 144167040. Its totient is φ = 30701440.

The previous prime is 78414529. The next prime is 78414533. The reversal of 78414530 is 3541487.

It is a super-2 number, since 2×78414530² = 12297677030241800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78414533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126782 + ... + 127398.

It is an arithmetic number, because the mean of its divisors is an integer number (4505220).

Almost surely, 2^78414530 is an apocalyptic number.

78414530 is a deficient number, since it is larger than the sum of its proper divisors (65752510).

78414530 is a wasteful number, since it uses less digits than its factorization.

78414530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 78414530 is about 8855.1979085732. The cubic root of 78414530 is about 428.0214309297.

The spelling of 78414530 in words is "seventy-eight million, four hundred fourteen thousand, five hundred thirty".