275161920 has 224 divisors, whose sum is σ = 969117696. Its totient is φ = 65587200.

The previous prime is 275161907. The next prime is 275161927. The reversal of 275161920 is 29161572.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275161927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 749577 + ... + 749943.

Almost surely, 2^275161920 is an apocalyptic number.

275161920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275161920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (484558848).

275161920 is an abundant number, since it is smaller than the sum of its proper divisors (693955776).

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

275161920 is a wasteful number, since it uses less digits than its factorization.

275161920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 275161920 is about 16588.0053050389. The cubic root of 275161920 is about 650.4233297581.

The spelling of 275161920 in words is "two hundred seventy-five million, one hundred sixty-one thousand, nine hundred twenty".