78141020 has 12 divisors (see below), whose sum is σ = 164096184. Its totient is φ = 31256400.

The previous prime is 78141013. The next prime is 78141023. The reversal of 78141020 is 2014187.

It is a super-2 number, since 2×78141020² = 12212038013280800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78141023) 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, 1953506 + ... + 1953545.

It is an arithmetic number, because the mean of its divisors is an integer number (13674682).

Almost surely, 2^78141020 is an apocalyptic number.

It is an amenable number.

78141020 is an abundant number, since it is smaller than the sum of its proper divisors (85955164).

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

78141020 is a wasteful number, since it uses less digits than its factorization.

78141020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907060 (or 3907058 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 78141020 is about 8839.7409464305. The cubic root of 78141020 is about 427.5232047411.

The spelling of 78141020 in words is "seventy-eight million, one hundred forty-one thousand, twenty".