20435402 has 16 divisors (see below), whose sum is σ = 33506592. Its totient is φ = 9290160.

The previous prime is 20435399. The next prime is 20435407. The reversal of 20435402 is 20453402.

It is not an unprimeable number, because it can be changed into a prime (20435407) 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, 4124 + ... + 7607.

It is an arithmetic number, because the mean of its divisors is an integer number (2094162).

Almost surely, 2^20435402 is an apocalyptic number.

20435402 is a deficient number, since it is larger than the sum of its proper divisors (13071190).

20435402 is a wasteful number, since it uses less digits than its factorization.

20435402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11813.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20435402 is about 4520.5532847208. The cubic root of 20435402 is about 273.3974094606.

Adding to 20435402 its reverse (20453402), we get a palindrome (40888804).

The spelling of 20435402 in words is "twenty million, four hundred thirty-five thousand, four hundred two".