78402094 has 8 divisors (see below), whose sum is σ = 123792840. Its totient is φ = 37137816.

The previous prime is 78402089. The next prime is 78402097. The reversal of 78402094 is 49020487.

It is a happy number.

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

It is a super-2 number, since 2×78402094² = 12293776687169672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78402097) 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, 1031569 + ... + 1031644.

It is an arithmetic number, because the mean of its divisors is an integer number (15474105).

Almost surely, 2^78402094 is an apocalyptic number.

78402094 is a deficient number, since it is larger than the sum of its proper divisors (45390746).

78402094 is a wasteful number, since it uses less digits than its factorization.

78402094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063234.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 78402094 is about 8854.4956942787. The cubic root of 78402094 is about 427.9988026577.

The spelling of 78402094 in words is "seventy-eight million, four hundred two thousand, ninety-four".