26401512 has 16 divisors (see below), whose sum is σ = 66003840. Its totient is φ = 8800496.

The previous prime is 26401511. The next prime is 26401523. The reversal of 26401512 is 21510462.

It is a super-2 number, since 2×26401512² = 1394079671772288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26401511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550008 + ... + 550055.

It is an arithmetic number, because the mean of its divisors is an integer number (4125240).

Almost surely, 2^26401512 is an apocalyptic number.

It is an amenable number.

26401512 is an abundant number, since it is smaller than the sum of its proper divisors (39602328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26401512 is a wasteful number, since it uses less digits than its factorization.

26401512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100072 (or 1100068 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 26401512 is about 5138.2401656598. The cubic root of 26401512 is about 297.7667950125.

Adding to 26401512 its reverse (21510462), we get a palindrome (47911974).

The spelling of 26401512 in words is "twenty-six million, four hundred one thousand, five hundred twelve".