428907534 has 32 divisors (see below), whose sum is σ = 936714240. Its totient is φ = 129844800.

The previous prime is 428907533. The next prime is 428907559. The reversal of 428907534 is 435709824.

It is a super-2 number, since 2×428907534² = 367923345443922312, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428907533) 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, 81874 + ... + 86954.

It is an arithmetic number, because the mean of its divisors is an integer number (29272320).

Almost surely, 2^428907534 is an apocalyptic number.

428907534 is an abundant number, since it is smaller than the sum of its proper divisors (507806706).

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

428907534 is a wasteful number, since it uses less digits than its factorization.

428907534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6376.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 428907534 is about 20710.0829066424. The cubic root of 428907534 is about 754.1444830500.

The spelling of 428907534 in words is "four hundred twenty-eight million, nine hundred seven thousand, five hundred thirty-four".