11978902 has 16 divisors (see below), whose sum is σ = 19503792. Its totient is φ = 5484960.

The previous prime is 11978893. The next prime is 11978917. The reversal of 11978902 is 20987911.

11978902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1648 + ... + 5164.

It is an arithmetic number, because the mean of its divisors is an integer number (1218987).

Almost surely, 2^11978902 is an apocalyptic number.

11978902 is a deficient number, since it is larger than the sum of its proper divisors (7524890).

11978902 is a wasteful number, since it uses less digits than its factorization.

11978902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3663.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 11978902 is about 3461.0550414577. The cubic root of 11978902 is about 228.8085965725.

Subtracting 11978902 from its reverse (20987911), we obtain a palindrome (9009009).

It can be divided in two parts, 11978 and 902, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 11978902 in words is "eleven million, nine hundred seventy-eight thousand, nine hundred two".