1077432778 has 8 divisors (see below), whose sum is σ = 1617514272. Its totient is φ = 538261356.

The previous prime is 1077432757. The next prime is 1077432781. The reversal of 1077432778 is 8772347701.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1077432778² = 2321722782217594568, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 224550 + ... + 229297.

It is an arithmetic number, because the mean of its divisors is an integer number (202189284).

Almost surely, 2^1077432778 is an apocalyptic number.

1077432778 is a deficient number, since it is larger than the sum of its proper divisors (540081494).

1077432778 is a wasteful number, since it uses less digits than its factorization.

1077432778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455036.

The product of its (nonzero) digits is 460992, while the sum is 46.

The square root of 1077432778 is about 32824.2711724114. The cubic root of 1077432778 is about 1025.1719808192.

The spelling of 1077432778 in words is "one billion, seventy-seven million, four hundred thirty-two thousand, seven hundred seventy-eight".