10428639 has 8 divisors (see below), whose sum is σ = 14974512. Its totient is φ = 6417600.

The previous prime is 10428631. The next prime is 10428643. The reversal of 10428639 is 93682401.

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

It is not a de Polignac number, because 10428639 - 2³ = 10428631 is a prime.

It is a super-2 number, since 2×10428639² = 217513022784642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10428631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133662 + ... + 133739.

It is an arithmetic number, because the mean of its divisors is an integer number (1871814).

Almost surely, 2^10428639 is an apocalyptic number.

10428639 is a deficient number, since it is larger than the sum of its proper divisors (4545873).

10428639 is a wasteful number, since it uses less digits than its factorization.

10428639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267417.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 10428639 is about 3229.3403351149. The cubic root of 10428639 is about 218.4787545213.

The spelling of 10428639 in words is "ten million, four hundred twenty-eight thousand, six hundred thirty-nine".