72029649 has 8 divisors (see below), whose sum is σ = 99351360. Its totient is φ = 46363856.

The previous prime is 72029621. The next prime is 72029677. The reversal of 72029649 is 94692027.

It is an interprime number because it is at equal distance from previous prime (72029621) and next prime (72029677).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72029649 - 2⁸ = 72029393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72029609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413877 + ... + 414050.

It is an arithmetic number, because the mean of its divisors is an integer number (12418920).

Almost surely, 2^72029649 is an apocalyptic number.

It is an amenable number.

72029649 is a deficient number, since it is larger than the sum of its proper divisors (27321711).

72029649 is a wasteful number, since it uses less digits than its factorization.

72029649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827959.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 72029649 is about 8487.0282784965. The cubic root of 72029649 is about 416.0738608528.

The spelling of 72029649 in words is "seventy-two million, twenty-nine thousand, six hundred forty-nine".