78367954 has 32 divisors (see below), whose sum is σ = 139104000. Its totient is φ = 33092640.

The previous prime is 78367937. The next prime is 78367967. The reversal of 78367954 is 45976387.

It is a happy number.

It is a super-2 number, since 2×78367954² = 12283072428292232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 78367898 and 78367907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47902 + ... + 49510.

It is an arithmetic number, because the mean of its divisors is an integer number (4347000).

Almost surely, 2^78367954 is an apocalyptic number.

78367954 is a deficient number, since it is larger than the sum of its proper divisors (60736046).

78367954 is a wasteful number, since it uses less digits than its factorization.

78367954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703 (or 1689 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 49.

The square root of 78367954 is about 8852.5676501228. The cubic root of 78367954 is about 427.9366699612.

The spelling of 78367954 in words is "seventy-eight million, three hundred sixty-seven thousand, nine hundred fifty-four".