428026726 has 4 divisors (see below), whose sum is σ = 642040092. Its totient is φ = 214013362.

The previous prime is 428026723. The next prime is 428026727. The reversal of 428026726 is 627620824.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428026723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107006680 + ... + 107006683.

It is an arithmetic number, because the mean of its divisors is an integer number (160510023).

Almost surely, 2^428026726 is an apocalyptic number.

428026726 is a deficient number, since it is larger than the sum of its proper divisors (214013366).

428026726 is a wasteful number, since it uses less digits than its factorization.

428026726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214013365.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 428026726 is about 20688.8067804791. The cubic root of 428026726 is about 753.6278901808.

The spelling of 428026726 in words is "four hundred twenty-eight million, twenty-six thousand, seven hundred twenty-six".