26464440 has 32 divisors (see below), whose sum is σ = 79393680. Its totient is φ = 7057152.

The previous prime is 26464439. The next prime is 26464453. The reversal of 26464440 is 4446462.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 26464398 and 26464407.

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, 110149 + ... + 110388.

Almost surely, 2^26464440 is an apocalyptic number.

26464440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26464440 is an abundant number, since it is smaller than the sum of its proper divisors (52929240).

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

26464440 is a wasteful number, since it uses less digits than its factorization.

26464440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220551 (or 220547 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 26464440 is about 5144.3600185057. The cubic root of 26464440 is about 298.0031830058.

The spelling of 26464440 in words is "twenty-six million, four hundred sixty-four thousand, four hundred forty".