26401630 has 8 divisors (see below), whose sum is σ = 47522952. Its totient is φ = 10560648.

The previous prime is 26401619. The next prime is 26401643. The reversal of 26401630 is 3610462.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1320072 + ... + 1320091.

It is an arithmetic number, because the mean of its divisors is an integer number (5940369).

Almost surely, 2^26401630 is an apocalyptic number.

26401630 is a deficient number, since it is larger than the sum of its proper divisors (21121322).

26401630 is a wasteful number, since it uses less digits than its factorization.

26401630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640170.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 26401630 is about 5138.2516481776. The cubic root of 26401630 is about 297.7672386289.

The spelling of 26401630 in words is "twenty-six million, four hundred one thousand, six hundred thirty".