72454069 has 4 divisors (see below), whose sum is σ = 72479596. Its totient is φ = 72428544.

The previous prime is 72454061. The next prime is 72454079. The reversal of 72454069 is 96045427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35402500 + 37051569 = 5950^2 + 6087^2 .

It is a cyclic number.

It is not a de Polignac number, because 72454069 - 2³ = 72454061 is a prime.

It is a super-2 number, since 2×72454069² = 10499184229313522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72454061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7884 + ... + 14389.

It is an arithmetic number, because the mean of its divisors is an integer number (18119899).

Almost surely, 2^72454069 is an apocalyptic number.

It is an amenable number.

72454069 is a deficient number, since it is larger than the sum of its proper divisors (25527).

72454069 is a wasteful number, since it uses less digits than its factorization.

72454069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25526.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 72454069 is about 8511.9955944537. The cubic root of 72454069 is about 416.8894710962.

The spelling of 72454069 in words is "seventy-two million, four hundred fifty-four thousand, sixty-nine".