428377473 has 24 divisors (see below), whose sum is σ = 641857320. Its totient is φ = 274982400.

The previous prime is 428377451. The next prime is 428377489. The reversal of 428377473 is 374773824.

It can be written as a sum of positive squares in 4 ways, for example, as 179747649 + 248629824 = 13407^2 + 15768^2 .

It is not a de Polignac number, because 428377473 - 2¹⁸ = 428115329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428377423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102615 + ... + 106707.

It is an arithmetic number, because the mean of its divisors is an integer number (26744055).

Almost surely, 2^428377473 is an apocalyptic number.

It is an amenable number.

428377473 is a deficient number, since it is larger than the sum of its proper divisors (213479847).

428377473 is a wasteful number, since it uses less digits than its factorization.

428377473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4529 (or 4526 counting only the distinct ones).

The product of its digits is 790272, while the sum is 45.

The square root of 428377473 is about 20697.2817780500. The cubic root of 428377473 is about 753.8336877286.

The spelling of 428377473 in words is "four hundred twenty-eight million, three hundred seventy-seven thousand, four hundred seventy-three".