1072726380 has 72 divisors (see below), whose sum is σ = 3549755664. Its totient is φ = 260054400.

The previous prime is 1072726351. The next prime is 1072726397. The reversal of 1072726380 is 836272701.

1072726380 is a `hidden beast` number, since 1 + 0 + 7 + 272 + 6 + 380 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 268911 + ... + 272870.

It is an arithmetic number, because the mean of its divisors is an integer number (49302162).

Almost surely, 2^1072726380 is an apocalyptic number.

1072726380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1072726380 is an abundant number, since it is smaller than the sum of its proper divisors (2477029284).

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

1072726380 is a wasteful number, since it uses less digits than its factorization.

1072726380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541807 (or 541802 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 1072726380 is about 32752.5018891687. The cubic root of 1072726380 is about 1023.6770972341.

The spelling of 1072726380 in words is "one billion, seventy-two million, seven hundred twenty-six thousand, three hundred eighty".