26478730 has 8 divisors (see below), whose sum is σ = 47661732. Its totient is φ = 10591488.

The previous prime is 26478721. The next prime is 26478737. The reversal of 26478730 is 3787462.

It can be written as a sum of positive squares in 2 ways, for example, as 26122321 + 356409 = 5111^2 + 597^2 .

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

It is a super-2 number, since 2×26478730² = 1402246284825800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26478730.

It is not an unprimeable number, because it can be changed into a prime (26478737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1323927 + ... + 1323946.

Almost surely, 2^26478730 is an apocalyptic number.

26478730 is a deficient number, since it is larger than the sum of its proper divisors (21183002).

26478730 is a wasteful number, since it uses less digits than its factorization.

26478730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647880.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 26478730 is about 5145.7487307485. The cubic root of 26478730 is about 298.0568109336.

The spelling of 26478730 in words is "twenty-six million, four hundred seventy-eight thousand, seven hundred thirty".