1245026772 has 36 divisors (see below), whose sum is σ = 3433256736. Its totient is φ = 377280720.

The previous prime is 1245026767. The next prime is 1245026779. The reversal of 1245026772 is 2776205421.

It is a happy number.

1245026772 is a `hidden beast` number, since 1 + 24 + 502 + 67 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245026779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1571608 + ... + 1572399.

Almost surely, 2^1245026772 is an apocalyptic number.

1245026772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1245026772 is an abundant number, since it is smaller than the sum of its proper divisors (2188229964).

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

1245026772 is a wasteful number, since it uses less digits than its factorization.

1245026772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144028 (or 3144023 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 1245026772 is about 35284.9368994760. The cubic root of 1245026772 is about 1075.7868468938.

The spelling of 1245026772 in words is "one billion, two hundred forty-five million, twenty-six thousand, seven hundred seventy-two".