1274402772 has 18 divisors (see below), whose sum is σ = 3221407098. Its totient is φ = 424800912.

The previous prime is 1274402761. The next prime is 1274402783. The reversal of 1274402772 is 2772044721.

It is a happy number.

1274402772 is a `hidden beast` number, since 127 + 440 + 27 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (1274402761) and next prime (1274402783).

It can be written as a sum of positive squares in only one way, i.e., 1014677316 + 259725456 = 31854^2 + 16116^2 .

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

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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: 35400077 = 1274402772 / (1 + 2 + 7 + 4 + 4 + 0 + 2 + 7 + 7 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17700003 + ... + 17700074.

It is an arithmetic number, because the mean of its divisors is an integer number (178967061).

Almost surely, 2^1274402772 is an apocalyptic number.

1274402772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1274402772 is an abundant number, since it is smaller than the sum of its proper divisors (1947004326).

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

1274402772 is a wasteful number, since it uses less digits than its factorization.

1274402772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35400087 (or 35400082 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 36.

The square root of 1274402772 is about 35698.7782984236. The cubic root of 1274402772 is about 1084.1821076746.

The spelling of 1274402772 in words is "one billion, two hundred seventy-four million, four hundred two thousand, seven hundred seventy-two".