78122470 has 8 divisors (see below), whose sum is σ = 140620464. Its totient is φ = 31248984.

The previous prime is 78122461. The next prime is 78122479. The reversal of 78122470 is 7422187.

It is an interprime number because it is at equal distance from previous prime (78122461) and next prime (78122479).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78122470² = 12206240637801800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78122479) 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, 3906114 + ... + 3906133.

It is an arithmetic number, because the mean of its divisors is an integer number (17577558).

Almost surely, 2^78122470 is an apocalyptic number.

78122470 is a deficient number, since it is larger than the sum of its proper divisors (62497994).

78122470 is a wasteful number, since it uses less digits than its factorization.

78122470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7812254.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 78122470 is about 8838.6916452606. The cubic root of 78122470 is about 427.4893719643.

The spelling of 78122470 in words is "seventy-eight million, one hundred twenty-two thousand, four hundred seventy".