78412455 has 48 divisors (see below), whose sum is σ = 153788544. Its totient is φ = 38011680.

The previous prime is 78412441. The next prime is 78412519. The reversal of 78412455 is 55421487.

It is not a de Polignac number, because 78412455 - 2⁶ = 78412391 is a prime.

It is a super-2 number, since 2×78412455² = 12297026198254050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10432 + ... + 16298.

It is an arithmetic number, because the mean of its divisors is an integer number (3203928).

Almost surely, 2^78412455 is an apocalyptic number.

78412455 is a deficient number, since it is larger than the sum of its proper divisors (75376089).

78412455 is a wasteful number, since it uses less digits than its factorization.

78412455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5898 (or 5886 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 78412455 is about 8855.0807449735. The cubic root of 78412455 is about 428.0176554716.

It can be divided in two parts, 7841 and 2455, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 78412455 in words is "seventy-eight million, four hundred twelve thousand, four hundred fifty-five".