10781402 has 4 divisors (see below), whose sum is σ = 16172106. Its totient is φ = 5390700.

The previous prime is 10781399. The next prime is 10781423. The reversal of 10781402 is 20418701.

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

It can be written as a sum of positive squares in only one way, i.e., 6817321 + 3964081 = 2611^2 + 1991^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2695349 + ... + 2695352.

Almost surely, 2^10781402 is an apocalyptic number.

10781402 is a deficient number, since it is larger than the sum of its proper divisors (5390704).

10781402 is an equidigital number, since it uses as much as digits as its factorization.

10781402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390703.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 10781402 is about 3283.5045302238. The cubic root of 10781402 is about 220.9149362438.

The spelling of 10781402 in words is "ten million, seven hundred eighty-one thousand, four hundred two".