77425400 has 96 divisors (see below), whose sum is σ = 196497840. Its totient is φ = 28200960.

The previous prime is 77425391. The next prime is 77425417. The reversal of 77425400 is 452477.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 252047 + ... + 252353.

Almost surely, 2^77425400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77425400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98248920).

77425400 is an abundant number, since it is smaller than the sum of its proper divisors (119072440).

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

77425400 is a wasteful number, since it uses less digits than its factorization.

77425400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 77425400 is about 8799.1704154426. The cubic root of 77425400 is about 426.2141061900.

Adding to 77425400 its reverse (452477), we get a palindrome (77877877).

The spelling of 77425400 in words is "seventy-seven million, four hundred twenty-five thousand, four hundred".