261472029 has 16 divisors (see below), whose sum is σ = 429082752. Its totient is φ = 137919168.

The previous prime is 261472021. The next prime is 261472037. The reversal of 261472029 is 920274162.

It is an interprime number because it is at equal distance from previous prime (261472021) and next prime (261472037).

It is not a de Polignac number, because 261472029 - 2³ = 261472021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261472021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478614 + ... + 479159.

It is an arithmetic number, because the mean of its divisors is an integer number (26817672).

Almost surely, 2^261472029 is an apocalyptic number.

It is an amenable number.

261472029 is a deficient number, since it is larger than the sum of its proper divisors (167610723).

261472029 is a wasteful number, since it uses less digits than its factorization.

261472029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957796.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 261472029 is about 16170.0967529573. The cubic root of 261472029 is about 639.4526806736.

The spelling of 261472029 in words is "two hundred sixty-one million, four hundred seventy-two thousand, twenty-nine".