402670 has 16 divisors (see below), whose sum is σ = 736848. Its totient is φ = 158400.

The previous prime is 402631. The next prime is 402691. The reversal of 402670 is 76204.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

402670 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370 + ... + 970.

It is an arithmetic number, because the mean of its divisors is an integer number (46053).

2⁴⁰²⁶⁷⁰ is an apocalyptic number.

402670 is a deficient number, since it is larger than the sum of its proper divisors (334178).

402670 is a wasteful number, since it uses less digits than its factorization.

402670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 402670 is about 634.5628416477. The cubic root of 402670 is about 73.8442059560.

Adding to 402670 its reverse (76204), we get a palindrome (478874).

It can be divided in two parts, 4026 and 70, that added together give a 12-th power (4096 = 2¹²).

The spelling of 402670 in words is "four hundred two thousand, six hundred seventy".