457652778 has 32 divisors (see below), whose sum is σ = 1025507520. Its totient is φ = 134933760.

The previous prime is 457652777. The next prime is 457652807. The reversal of 457652778 is 877256754.

It is a super-2 number, since 2×457652778² = 418892130422234568, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 457652778.

It is not an unprimeable number, because it can be changed into a prime (457652773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91263 + ... + 96146.

It is an arithmetic number, because the mean of its divisors is an integer number (32047110).

Almost surely, 2^457652778 is an apocalyptic number.

457652778 is an abundant number, since it is smaller than the sum of its proper divisors (567854742).

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

457652778 is a wasteful number, since it uses less digits than its factorization.

457652778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187462.

The product of its digits is 3292800, while the sum is 51.

The square root of 457652778 is about 21392.8207116313. The cubic root of 457652778 is about 770.6290345309.

The spelling of 457652778 in words is "four hundred fifty-seven million, six hundred fifty-two thousand, seven hundred seventy-eight".