261153424 has 40 divisors (see below), whose sum is σ = 596930048. Its totient is φ = 108311040.

The previous prime is 261153421. The next prime is 261153463. The reversal of 261153424 is 424351162.

It is a super-2 number, since 2×261153424² = 136402221733847552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 261153392 and 261153401.

It is not an unprimeable number, because it can be changed into a prime (261153421) 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, 34137 + ... + 41080.

Almost surely, 2^261153424 is an apocalyptic number.

It is an amenable number.

261153424 is an abundant number, since it is smaller than the sum of its proper divisors (335776624).

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

261153424 is a wasteful number, since it uses less digits than its factorization.

261153424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75263 (or 75257 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 261153424 is about 16160.2420773948. The cubic root of 261153424 is about 639.1928496597.

The spelling of 261153424 in words is "two hundred sixty-one million, one hundred fifty-three thousand, four hundred twenty-four".