273402840 has 128 divisors (see below), whose sum is σ = 906370560. Its totient is φ = 65624064.

The previous prime is 273402839. The next prime is 273402887. The reversal of 273402840 is 48204372.

It is a super-2 number, since 2×273402840² = 149498225840131200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 273402798 and 273402807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44007 + ... + 49833.

It is an arithmetic number, because the mean of its divisors is an integer number (7081020).

Almost surely, 2^273402840 is an apocalyptic number.

273402840 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 273402840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453185280).

273402840 is an abundant number, since it is smaller than the sum of its proper divisors (632967720).

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

273402840 is a wasteful number, since it uses less digits than its factorization.

273402840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881 (or 5877 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 273402840 is about 16534.8976410500. The cubic root of 273402840 is about 649.0343372913.

The spelling of 273402840 in words is "two hundred seventy-three million, four hundred two thousand, eight hundred forty".