274142628 has 18 divisors (see below), whose sum is σ = 692971734. Its totient is φ = 91380864.

The previous prime is 274142623. The next prime is 274142647. The reversal of 274142628 is 826241472.

274142628 is a `hidden beast` number, since 27 + 4 + 1 + 4 + 2 + 628 = 666.

It can be written as a sum of positive squares in only one way, i.e., 269682084 + 4460544 = 16422^2 + 2112^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 7615073 = 274142628 / (2 + 7 + 4 + 1 + 4 + 2 + 6 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 274142592 and 274142601.

It is not an unprimeable number, because it can be changed into a prime (274142623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3807501 + ... + 3807572.

Almost surely, 2^274142628 is an apocalyptic number.

It is an amenable number.

274142628 is an abundant number, since it is smaller than the sum of its proper divisors (418829106).

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

274142628 is a wasteful number, since it uses less digits than its factorization.

274142628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7615083 (or 7615078 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 274142628 is about 16557.2530330366. The cubic root of 274142628 is about 649.6192073367.

It can be divided in two parts, 2741 and 42628, that added together give a square (45369 = 213²).

The spelling of 274142628 in words is "two hundred seventy-four million, one hundred forty-two thousand, six hundred twenty-eight".