274721240 has 32 divisors (see below), whose sum is σ = 619246080. Its totient is φ = 109688832.

The previous prime is 274721219. The next prime is 274721261. The reversal of 274721240 is 42127472.

It is an interprime number because it is at equal distance from previous prime (274721219) and next prime (274721261).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17129 + ... + 29031.

It is an arithmetic number, because the mean of its divisors is an integer number (19351440).

Almost surely, 2^274721240 is an apocalyptic number.

274721240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

274721240 is an abundant number, since it is smaller than the sum of its proper divisors (344524840).

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

274721240 is a wasteful number, since it uses less digits than its factorization.

274721240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12491 (or 12487 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 274721240 is about 16574.7168904932. The cubic root of 274721240 is about 650.0759201263.

The spelling of 274721240 in words is "two hundred seventy-four million, seven hundred twenty-one thousand, two hundred forty".