76553440 has 24 divisors (see below), whose sum is σ = 180857880. Its totient is φ = 30621312.

The previous prime is 76553429. The next prime is 76553443. The reversal of 76553440 is 4435567.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 76553396 and 76553405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76553443) 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, 239070 + ... + 239389.

It is an arithmetic number, because the mean of its divisors is an integer number (7535745).

Almost surely, 2^76553440 is an apocalyptic number.

It is an amenable number.

76553440 is an abundant number, since it is smaller than the sum of its proper divisors (104304440).

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

76553440 is a wasteful number, since it uses less digits than its factorization.

76553440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478474 (or 478466 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 76553440 is about 8749.4822703975. The cubic root of 76553440 is about 424.6080631173.

The spelling of 76553440 in words is "seventy-six million, five hundred fifty-three thousand, four hundred forty".