78040930 has 32 divisors (see below), whose sum is σ = 155545920. Its totient is φ = 27952320.

The previous prime is 78040927. The next prime is 78040933. The reversal of 78040930 is 3904087.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78040927) and next prime (78040933).

It is a junction number, because it is equal to n+sod(n) for n = 78040892 and 78040901.

It is not an unprimeable number, because it can be changed into a prime (78040933) 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, 2076 + ... + 12664.

It is an arithmetic number, because the mean of its divisors is an integer number (4860810).

Almost surely, 2^78040930 is an apocalyptic number.

78040930 is a deficient number, since it is larger than the sum of its proper divisors (77504990).

78040930 is a wasteful number, since it uses less digits than its factorization.

78040930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10674.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 78040930 is about 8834.0777673733. The cubic root of 78040930 is about 427.3405901098.

The spelling of 78040930 in words is "seventy-eight million, forty thousand, nine hundred thirty".