19953402 has 16 divisors (see below), whose sum is σ = 45607872. Its totient is φ = 5700960.

The previous prime is 19953391. The next prime is 19953407. The reversal of 19953402 is 20435991.

It is not an unprimeable number, because it can be changed into a prime (19953407) 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, 237499 + ... + 237582.

It is an arithmetic number, because the mean of its divisors is an integer number (2850492).

Almost surely, 2^19953402 is an apocalyptic number.

19953402 is an abundant number, since it is smaller than the sum of its proper divisors (25654470).

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

19953402 is a wasteful number, since it uses less digits than its factorization.

19953402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475093.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 19953402 is about 4466.9231020916. The cubic root of 19953402 is about 271.2307870044.

The spelling of 19953402 in words is "nineteen million, nine hundred fifty-three thousand, four hundred two".