26129430 has 24 divisors (see below), whose sum is σ = 67936752. Its totient is φ = 6967824.

The previous prime is 26129429. The next prime is 26129473. The reversal of 26129430 is 3492162.

26129430 is a `hidden beast` number, since 2 + 612 + 9 + 43 + 0 = 666.

It is a super-2 number, since 2×26129430² = 1365494224249800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26129394 and 26129403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145074 + ... + 145253.

It is an arithmetic number, because the mean of its divisors is an integer number (2830698).

Almost surely, 2^26129430 is an apocalyptic number.

26129430 is an abundant number, since it is smaller than the sum of its proper divisors (41807322).

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

26129430 is a wasteful number, since it uses less digits than its factorization.

26129430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290340 (or 290337 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 26129430 is about 5111.6954134612. The cubic root of 26129430 is about 296.7403778179.

It can be divided in two parts, 261294 and 30, that multiplied together give a triangular number (7838820 = T₃₉₅₉).

The spelling of 26129430 in words is "twenty-six million, one hundred twenty-nine thousand, four hundred thirty".