26139480 has 32 divisors (see below), whose sum is σ = 78418800. Its totient is φ = 6970496.

The previous prime is 26139457. The next prime is 26139481. The reversal of 26139480 is 8493162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26139481) 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, 108795 + ... + 109034.

Almost surely, 2^26139480 is an apocalyptic number.

26139480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26139480 is an abundant number, since it is smaller than the sum of its proper divisors (52279320).

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

26139480 is a wasteful number, since it uses less digits than its factorization.

26139480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217843 (or 217839 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 26139480 is about 5112.6783587470. The cubic root of 26139480 is about 296.7784174094.

The spelling of 26139480 in words is "twenty-six million, one hundred thirty-nine thousand, four hundred eighty".