78041400 has 48 divisors (see below), whose sum is σ = 241930200. Its totient is φ = 20810880.

The previous prime is 78041389. The next prime is 78041419. The reversal of 78041400 is 414087.

It is a super-2 number, since 2×78041400² = 12180920227920000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64435 + ... + 65634.

Almost surely, 2^78041400 is an apocalyptic number.

It is an amenable number.

78041400 is an abundant number, since it is smaller than the sum of its proper divisors (163888800).

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

78041400 is a wasteful number, since it uses less digits than its factorization.

78041400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130088 (or 130079 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 78041400 is about 8834.1043688650. The cubic root of 78041400 is about 427.3414479916.

Adding to 78041400 its reverse (414087), we get a palindrome (78455487).

The spelling of 78041400 in words is "seventy-eight million, forty-one thousand, four hundred".