78141730 has 16 divisors (see below), whose sum is σ = 143648640. Its totient is φ = 30591472.

The previous prime is 78141727. The next prime is 78141751. The reversal of 78141730 is 3714187.

It is a super-2 number, since 2×78141730² = 12212259934785800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78141692 and 78141701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82660 + ... + 83599.

It is an arithmetic number, because the mean of its divisors is an integer number (8978040).

Almost surely, 2^78141730 is an apocalyptic number.

78141730 is a deficient number, since it is larger than the sum of its proper divisors (65506910).

78141730 is a wasteful number, since it uses less digits than its factorization.

78141730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166313.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 78141730 is about 8839.7811058872. The cubic root of 78141730 is about 427.5244995820.

The spelling of 78141730 in words is "seventy-eight million, one hundred forty-one thousand, seven hundred thirty".