1072440390 has 64 divisors (see below), whose sum is σ = 2989808640. Its totient is φ = 241107840.

The previous prime is 1072440379. The next prime is 1072440431. The reversal of 1072440390 is 930442701.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29050 + ... + 54669.

It is an arithmetic number, because the mean of its divisors is an integer number (46715760).

Almost surely, 2^1072440390 is an apocalyptic number.

1072440390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1072440390 is an abundant number, since it is smaller than the sum of its proper divisors (1917368250).

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

1072440390 is a wasteful number, since it uses less digits than its factorization.

1072440390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83797.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 1072440390 is about 32748.1356721264. The cubic root of 1072440390 is about 1023.5861180123.

The spelling of 1072440390 in words is "one billion, seventy-two million, four hundred forty thousand, three hundred ninety".