78727926 has 16 divisors (see below), whose sum is σ = 161118144. Its totient is φ = 25632264.

The previous prime is 78727921. The next prime is 78727931. The reversal of 78727926 is 62972787.

It is an interprime number because it is at equal distance from previous prime (78727921) and next prime (78727931).

It is a super-2 number, since 2×78727926² = 12396172664522952, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78727921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152316 + ... + 152831.

It is an arithmetic number, because the mean of its divisors is an integer number (10069884).

Almost surely, 2^78727926 is an apocalyptic number.

78727926 is an abundant number, since it is smaller than the sum of its proper divisors (82390218).

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

78727926 is a wasteful number, since it uses less digits than its factorization.

78727926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305195.

The product of its digits is 592704, while the sum is 48.

The square root of 78727926 is about 8872.8758584802. The cubic root of 78727926 is about 428.5908912749.

The spelling of 78727926 in words is "seventy-eight million, seven hundred twenty-seven thousand, nine hundred twenty-six".