11978733 has 8 divisors (see below), whose sum is σ = 17200288. Its totient is φ = 7371504.

The previous prime is 11978731. The next prime is 11978737. The reversal of 11978733 is 33787911.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11978733 - 2¹ = 11978731 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 307147 = 11978733 / (1 + 1 + 9 + 7 + 8 + 7 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11978691 and 11978700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11978731) 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, 153535 + ... + 153612.

It is an arithmetic number, because the mean of its divisors is an integer number (2150036).

Almost surely, 2^11978733 is an apocalyptic number.

11978733 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11978733 is a deficient number, since it is larger than the sum of its proper divisors (5221555).

11978733 is a wasteful number, since it uses less digits than its factorization.

11978733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307163.

The product of its digits is 31752, while the sum is 39.

The square root of 11978733 is about 3461.0306268509. The cubic root of 11978733 is about 228.8075205464.

The spelling of 11978733 in words is "eleven million, nine hundred seventy-eight thousand, seven hundred thirty-three".