1257628034 has 24 divisors (see below), whose sum is σ = 2058381072. Its totient is φ = 575992560.

The previous prime is 1257628019. The next prime is 1257628049. The reversal of 1257628034 is 4308267521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1257628019) and next prime (1257628049).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30077 + ... + 58479.

It is an arithmetic number, because the mean of its divisors is an integer number (85765878).

Almost surely, 2^1257628034 is an apocalyptic number.

1257628034 is a deficient number, since it is larger than the sum of its proper divisors (800753038).

1257628034 is a wasteful number, since it uses less digits than its factorization.

1257628034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28562 (or 28549 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1257628034 is about 35463.0516735376. The cubic root of 1257628034 is about 1079.4041163011.

The spelling of 1257628034 in words is "one billion, two hundred fifty-seven million, six hundred twenty-eight thousand, thirty-four".