77303044 has 48 divisors (see below), whose sum is σ = 169682688. Its totient is φ = 29996928.

The previous prime is 77303033. The next prime is 77303087. The reversal of 77303044 is 44030377.

It is a super-2 number, since 2×77303044² = 11951521223331872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17289 + ... + 21295.

It is an arithmetic number, because the mean of its divisors is an integer number (3535056).

Almost surely, 2^77303044 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 77303044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84841344).

77303044 is an abundant number, since it is smaller than the sum of its proper divisors (92379644).

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

77303044 is a wasteful number, since it uses less digits than its factorization.

77303044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4084 (or 4082 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 77303044 is about 8792.2149655249. The cubic root of 77303044 is about 425.9894712585.

The spelling of 77303044 in words is "seventy-seven million, three hundred three thousand, forty-four".