72274433490 has 256 divisors, whose sum is σ = 222433136640. Its totient is φ = 16358215680.

The previous prime is 72274433461. The next prime is 72274433503. The reversal of 72274433490 is 9433447227.

72274433490 is a `hidden beast` number, since 7 + 227 + 4 + 4 + 334 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 126574905 + ... + 126575475.

It is an arithmetic number, because the mean of its divisors is an integer number (868879440).

Almost surely, 2^72274433490 is an apocalyptic number.

72274433490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 72274433490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111216568320).

72274433490 is an abundant number, since it is smaller than the sum of its proper divisors (150158703150).

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

72274433490 is a wasteful number, since it uses less digits than its factorization.

72274433490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134 (or 1128 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 45.

The spelling of 72274433490 in words is "seventy-two billion, two hundred seventy-four million, four hundred thirty-three thousand, four hundred ninety".